job: Replace by a better process abstraction layer

- New libuv/pty process abstraction with simplified API and no globals.
- Remove nvim/os/job*. Jobs are now a concept that apply only to programs
  spawned by vimscript job* functions.
- Refactor shell.c/channel.c to use the new module, which brings a number of
  advantages:
  - Simplified API, less code
  - No slots in the user job table are used
  - Not possible to acidentally receive data from vimscript
- Implement job table in eval.c, which is now a hash table with unilimited job
  slots and unique job ids.

21 files changed, 791 insertions, 1016 deletions

diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index ae6b99c336..b43ab238cd 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -55,6 +55,7 @@
 #include "nvim/misc1.h"
 #include "nvim/misc2.h"
 #include "nvim/keymap.h"
+#include "nvim/map.h"
 #include "nvim/file_search.h"
 #include "nvim/garray.h"
 #include "nvim/move.h"
@@ -82,8 +83,10 @@
 #include "nvim/version.h"
 #include "nvim/window.h"
 #include "nvim/os/os.h"
-#include "nvim/os/job.h"
+#include "nvim/event/uv_process.h"
+#include "nvim/event/pty_process.h"
 #include "nvim/event/rstream.h"
+#include "nvim/event/wstream.h"
 #include "nvim/os/time.h"
 #include "nvim/msgpack_rpc/channel.h"
 #include "nvim/msgpack_rpc/server.h"
@@ -442,14 +445,19 @@ static dictitem_T vimvars_var;                  /* variable used for v: */
 #define vimvarht  vimvardict.dv_hashtab
 
 typedef struct {
-  Job *job;
+  union {
+    UvProcess uv;
+    PtyProcess pty;
+  } proc;
+  Stream in, out, err;
   Terminal *term;
+  bool stopped;
   bool exited;
-  bool stdin_closed;
   int refcount;
   ufunc_T *on_stdout, *on_stderr, *on_exit;
   dict_T *self;
   int *status_ptr;
+  uint64_t id;
 } TerminalJobData;
 
 
@@ -462,7 +470,6 @@ typedef struct {
                                    valid character */
 // Memory pool for reusing JobEvent structures
 typedef struct {
-  int job_id;
   TerminalJobData *data;
   ufunc_T *callback;
   const char *type;
@@ -470,12 +477,15 @@ typedef struct {
   int status;
 } JobEvent;
 static int disable_job_defer = 0;
+static uint64_t current_job_id = 1;
+static PMap(uint64_t) *jobs = NULL; 
 
 /*
  * Initialize the global and v: variables.
  */
 void eval_init(void)
 {
+  jobs = pmap_new(uint64_t)();
   int i;
   struct vimvar   *p;
 
@@ -10692,29 +10702,27 @@ static void f_jobclose(typval_T *argvars, typval_T *rettv)
     return;
   }
 
-  Job *job = job_find(argvars[0].vval.v_number);
-
-  if (!is_user_job(job)) {
-    // Invalid job id
+  TerminalJobData *data = pmap_get(uint64_t)(jobs, argvars[0].vval.v_number);
+  if (!data) {
     EMSG(_(e_invjob));
     return;
   }
 
+  Process *proc = (Process *)&data->proc;
+
   if (argvars[1].v_type == VAR_STRING) {
     char *stream = (char *)argvars[1].vval.v_string;
     if (!strcmp(stream, "stdin")) {
-      job_close_in(job);
-      ((TerminalJobData *)job_data(job))->stdin_closed = true;
+      process_close_in(proc);
     } else if (!strcmp(stream, "stdout")) {
-      job_close_out(job);
+      process_close_out(proc);
     } else if (!strcmp(stream, "stderr")) {
-      job_close_err(job);
+      process_close_err(proc);
     } else {
       EMSG2(_("Invalid job stream \"%s\""), stream);
     }
   } else {
-    ((TerminalJobData *)job_data(job))->stdin_closed = true;
-    job_close_streams(job);
+    process_close_streams(proc);
   }
 }
 
@@ -10735,15 +10743,13 @@ static void f_jobsend(typval_T *argvars, typval_T *rettv)
     return;
   }
 
-  Job *job = job_find(argvars[0].vval.v_number);
-
-  if (!is_user_job(job)) {
-    // Invalid job id
+  TerminalJobData *data = pmap_get(uint64_t)(jobs, argvars[0].vval.v_number);
+  if (!data) {
     EMSG(_(e_invjob));
     return;
   }
 
-  if (((TerminalJobData *)job_data(job))->stdin_closed) {
+  if (((Process *)&data->proc)->in->closed) {
     EMSG(_("Can't send data to the job: stdin is closed"));
     return;
   }
@@ -10757,7 +10763,7 @@ static void f_jobsend(typval_T *argvars, typval_T *rettv)
   }
 
   WBuffer *buf = wstream_new_buffer(input, input_len, 1, xfree);
-  rettv->vval.v_number = job_write(job, buf);
+  rettv->vval.v_number = wstream_write(data->proc.uv.process.in, buf);
 }
 
 // "jobresize(job, width, height)" function
@@ -10777,19 +10783,20 @@ static void f_jobresize(typval_T *argvars, typval_T *rettv)
     return;
   }
 
-  Job *job = job_find(argvars[0].vval.v_number);
 
-  if (!is_user_job(job)) {
-    // Probably an invalid job id
+  TerminalJobData *data = pmap_get(uint64_t)(jobs, argvars[0].vval.v_number);
+  if (!data) {
     EMSG(_(e_invjob));
     return;
   }
 
-  if (!job_resize(job, argvars[1].vval.v_number, argvars[2].vval.v_number)) {
+  if (data->proc.uv.process.type != kProcessTypePty) {
     EMSG(_(e_jobnotpty));
     return;
   }
 
+  pty_process_resize(&data->proc.pty, argvars[1].vval.v_number,
+      argvars[2].vval.v_number);
   rettv->vval.v_number = 1;
 }
 
@@ -10878,37 +10885,33 @@ static void f_jobstart(typval_T *argvars, typval_T *rettv)
     }
   }
 
-  JobOptions opts = common_job_options(argv, on_stdout, on_stderr, on_exit,
-      job_opts);
+  bool pty = job_opts && get_dict_number(job_opts, (uint8_t *)"pty") != 0;
+  TerminalJobData *data = common_job_init(argv, on_stdout, on_stderr, on_exit,
+      job_opts, pty);
+  Process *proc = (Process *)&data->proc;
 
-  if (!job_opts) {
-    goto start;
-  }
-
-  opts.pty = get_dict_number(job_opts, (uint8_t *)"pty");
-  if (opts.pty) {
+  if (pty) {
     uint16_t width = get_dict_number(job_opts, (uint8_t *)"width");
     if (width > 0) {
-      opts.width = width;
+      data->proc.pty.width = width;
     }
     uint16_t height = get_dict_number(job_opts, (uint8_t *)"height");
     if (height > 0) {
-      opts.height = height;
+      data->proc.pty.height = height;
     }
     char *term = (char *)get_dict_string(job_opts, (uint8_t *)"TERM", true);
     if (term) {
-      opts.term_name = term;
+      data->proc.pty.term_name = term;
     }
   }
 
-start:
   if (!on_stdout) {
-    opts.stdout_cb = NULL;
+    proc->out = NULL;
   }
   if (!on_stderr) {
-    opts.stderr_cb = NULL;
+    proc->err = NULL;
   }
-  common_job_start(opts, rettv);
+  common_job_start(data, rettv);
 }
 
 // "jobstop()" function
@@ -10927,14 +10930,15 @@ static void f_jobstop(typval_T *argvars, typval_T *rettv)
     return;
   }
 
-  Job *job = job_find(argvars[0].vval.v_number);
 
-  if (!is_user_job(job)) {
+  TerminalJobData *data = pmap_get(uint64_t)(jobs, argvars[0].vval.v_number);
+  if (!data || data->stopped) {
     EMSG(_(e_invjob));
     return;
   }
 
-  job_stop(job);
+  process_stop((Process *)&data->proc);
+  data->stopped = true;
   rettv->vval.v_number = 1;
 }
 
@@ -10971,13 +10975,11 @@ static void f_jobwait(typval_T *argvars, typval_T *rettv)
   // is used to represent an invalid job id, -2 is for a interrupted job and
   // -1 for jobs that were skipped or timed out.
   for (listitem_T *arg = args->lv_first; arg != NULL; arg = arg->li_next) {
-    Job *job = NULL;
+    TerminalJobData *data = NULL;
     if (arg->li_tv.v_type != VAR_NUMBER
-        || !(job = job_find(arg->li_tv.vval.v_number))
-        || !is_user_job(job)) {
+        || !(data = pmap_get(uint64_t)(jobs, arg->li_tv.vval.v_number))) {
       list_append_number(rv, -3);
     } else {
-      TerminalJobData *data = job_data(job);
       // append the list item and set the status pointer so we'll collect the
       // status code when the job exits
       list_append_number(rv, -1);
@@ -10993,18 +10995,16 @@ static void f_jobwait(typval_T *argvars, typval_T *rettv)
   }
 
   for (listitem_T *arg = args->lv_first; arg != NULL; arg = arg->li_next) {
-    Job *job = NULL;
+    TerminalJobData *data = NULL;
     if (remaining == 0) {
       // timed out
       break;
     }
     if (arg->li_tv.v_type != VAR_NUMBER
-        || !(job = job_find(arg->li_tv.vval.v_number))
-        || !is_user_job(job)) {
+        || !(data = pmap_get(uint64_t)(jobs, arg->li_tv.vval.v_number))) {
       continue;
     }
-    TerminalJobData *data = job_data(job);
-    int status = job_wait(job, remaining);
+    int status = process_wait((Process *)&data->proc, remaining);
     if (status < 0) {
       // interrupted or timed out, skip remaining jobs.
       if (status == -2) {
@@ -11028,13 +11028,11 @@ static void f_jobwait(typval_T *argvars, typval_T *rettv)
   loop_poll_events(&loop, 0);
 
   for (listitem_T *arg = args->lv_first; arg != NULL; arg = arg->li_next) {
-    Job *job = NULL;
+    TerminalJobData *data = NULL;
     if (arg->li_tv.v_type != VAR_NUMBER
-        || !(job = job_find(arg->li_tv.vval.v_number))
-        || !is_user_job(job)) {
+        || !(data = pmap_get(uint64_t)(jobs, arg->li_tv.vval.v_number))) {
       continue;
     }
-    TerminalJobData *data = job_data(job);
     // remove the status pointer because the list may be freed before the
     // job exits
     data->status_ptr = NULL;
@@ -12951,7 +12949,7 @@ static void f_rpcstart(typval_T *argvars, typval_T *rettv)
 
   // The last item of argv must be NULL
   argv[i] = NULL;
-  uint64_t channel_id = channel_from_job(argv);
+  uint64_t channel_id = channel_from_process(argv);
 
   if (!channel_id) {
     EMSG(_(e_api_spawn_failed));
@@ -15225,19 +15223,15 @@ static void f_termopen(typval_T *argvars, typval_T *rettv)
     }
   }
 
-  JobOptions opts = common_job_options(argv, on_stdout, on_stderr, on_exit,
-      job_opts);
-  opts.pty = true;
-  opts.width = curwin->w_width;
-  opts.height = curwin->w_height;
-  opts.term_name = xstrdup("xterm-256color");
-  Job *job = common_job_start(opts, rettv);
-  if (!job) {
-    shell_free_argv(argv);
+  TerminalJobData *data = common_job_init(argv, on_stdout, on_stderr, on_exit,
+      job_opts, true);
+  data->proc.pty.width = curwin->w_width;
+  data->proc.pty.height = curwin->w_height;
+  data->proc.pty.term_name = xstrdup("xterm-256color");
+  if (!common_job_start(data, rettv)) {
     return;
   }
-  TerminalJobData *data = opts.data;
-  TerminalOptions topts = TERMINAL_OPTIONS_INIT;
+  TerminalOptions topts;
   topts.data = data;
   topts.width = curwin->w_width;
   topts.height = curwin->w_height;
@@ -15250,7 +15244,7 @@ static void f_termopen(typval_T *argvars, typval_T *rettv)
       && os_isdir(argvars[1].vval.v_string)) {
     cwd = (char *)argvars[1].vval.v_string;
   }
-  int pid = job_pid(job);
+  int pid = data->proc.pty.process.pid;
 
   // Get the desired name of the buffer.
   char *name = job_opts ?
@@ -20222,21 +20216,27 @@ char_u *do_string_sub(char_u *str, char_u *pat, char_u *sub, char_u *flags)
   return ret;
 }
 
-static inline JobOptions common_job_options(char **argv, ufunc_T *on_stdout,
-    ufunc_T *on_stderr, ufunc_T *on_exit, dict_T *self)
+static inline TerminalJobData *common_job_init(char **argv, ufunc_T *on_stdout,
+    ufunc_T *on_stderr, ufunc_T *on_exit, dict_T *self, bool pty)
 {
   TerminalJobData *data = xcalloc(1, sizeof(TerminalJobData));
+  data->stopped = false;
   data->on_stdout = on_stdout;
   data->on_stderr = on_stderr;
   data->on_exit = on_exit;
   data->self = self;
-  JobOptions opts = JOB_OPTIONS_INIT;
-  opts.argv = argv;
-  opts.data = data;
-  opts.stdout_cb = on_job_stdout;
-  opts.stderr_cb = on_job_stderr;
-  opts.exit_cb = on_job_exit;
-  return opts;
+  if (pty) {
+    data->proc.pty = pty_process_init(data);
+  } else {
+    data->proc.uv = uv_process_init(data);
+  }
+  Process *proc = (Process *)&data->proc;
+  proc->argv = argv;
+  proc->in = &data->in;
+  proc->out = &data->out;
+  proc->err = &data->err;
+  proc->cb = on_process_exit;
+  return data;
 }
 
 /// Return true/false on success/failure.
@@ -20262,24 +20262,28 @@ static inline bool common_job_callbacks(dict_T *vopts, ufunc_T **on_stdout,
   return false;
 }
 
-static inline Job *common_job_start(JobOptions opts, typval_T *rettv)
+static inline bool common_job_start(TerminalJobData *data, typval_T *rettv)
 {
-  TerminalJobData *data = opts.data;
   data->refcount++;
-  Job *job = job_start(opts, &rettv->vval.v_number);
+  Process *proc = (Process *)&data->proc;
+  if (!process_spawn(&loop, proc)) {
+    EMSG(_(e_jobexe));
+    return false;
+  }
 
-  if (rettv->vval.v_number <= 0) {
-    if (rettv->vval.v_number == 0) {
-      EMSG(_(e_jobtblfull));
-      xfree(opts.term_name);
-      free_term_job_data(data);
-    } else {
-      EMSG(_(e_jobexe));
-    }
-    return NULL;
+  data->id = current_job_id++;
+  wstream_init(proc->in, 0);
+  if (proc->out) {
+    rstream_init(proc->out, 0);
+    rstream_start(proc->out, on_job_stdout);
+  }
+  if (proc->err) {
+    rstream_init(proc->err, 0);
+    rstream_start(proc->err, on_job_stderr);
   }
-  data->job = job;
-  return job;
+  pmap_put(uint64_t)(jobs, data->id, data);
+  rettv->vval.v_number = data->id;
+  return true;
 }
 
 static inline void free_term_job_data(TerminalJobData *data) {
@@ -20300,25 +20304,15 @@ static inline void free_term_job_data(TerminalJobData *data) {
   xfree(data);
 }
 
-static inline bool is_user_job(Job *job)
-{
-  if (!job) {
-    return false;
-  }
-
-  JobOptions *opts = job_opts(job);
-  return opts->exit_cb == on_job_exit;
-}
-
 // vimscript job callbacks must be executed on Nvim main loop
-static inline void push_job_event(Job *job, ufunc_T *callback,
-    const char *type, char *data, size_t count, int status)
+static inline void push_job_event(TerminalJobData *data, ufunc_T *callback,
+    const char *type, char *buf, size_t count, int status)
 {
   JobEvent *event_data = xmalloc(sizeof(JobEvent));
   event_data->received = NULL;
-  if (data) {
+  if (buf) {
     event_data->received = list_alloc();
-    char *ptr = data;
+    char *ptr = buf;
     size_t remaining = count;
     size_t off = 0;
 
@@ -20342,8 +20336,7 @@ static inline void push_job_event(Job *job, ufunc_T *callback,
   } else {
     event_data->status = status;
   }
-  event_data->job_id = job_id(job);
-  event_data->data = job_data(job);
+  event_data->data = data;
   event_data->callback = callback;
   event_data->type = type;
   loop_push_event(&loop, (Event) {
@@ -20354,24 +20347,23 @@ static inline void push_job_event(Job *job, ufunc_T *callback,
 
 static void on_job_stdout(Stream *stream, RBuffer *buf, void *job, bool eof)
 {
-  TerminalJobData *data = job_data(job);
+  TerminalJobData *data = job;
   on_job_output(stream, job, buf, eof, data->on_stdout, "stdout");
 }
 
 static void on_job_stderr(Stream *stream, RBuffer *buf, void *job, bool eof)
 {
-  TerminalJobData *data = job_data(job);
+  TerminalJobData *data = job;
   on_job_output(stream, job, buf, eof, data->on_stderr, "stderr");
 }
 
-static void on_job_output(Stream *stream, Job *job, RBuffer *buf, bool eof,
-    ufunc_T *callback, const char *type)
+static void on_job_output(Stream *stream, TerminalJobData *data, RBuffer *buf,
+    bool eof, ufunc_T *callback, const char *type)
 {
   if (eof) {
     return;
   }
 
-  TerminalJobData *data = job_data(job);
   RBUFFER_UNTIL_EMPTY(buf, ptr, len) {
     // The order here matters, the terminal must receive the data first because
     // push_job_event will modify the read buffer(convert NULs into NLs)
@@ -20380,17 +20372,16 @@ static void on_job_output(Stream *stream, Job *job, RBuffer *buf, bool eof,
     }
 
     if (callback) {
-      push_job_event(job, callback, type, ptr, len, 0);
+      push_job_event(data, callback, type, ptr, len, 0);
     }
 
     rbuffer_consumed(buf, len);
   }
 }
 
-static void on_job_exit(Job *job, int status, void *d)
+static void on_process_exit(Process *proc, int status, void *d)
 {
   TerminalJobData *data = d;
-
   if (data->term && !data->exited) {
     data->exited = true;
     terminal_close(data->term,
@@ -20401,19 +20392,20 @@ static void on_job_exit(Job *job, int status, void *d)
     *data->status_ptr = status;
   }
 
-  push_job_event(job, data->on_exit, "exit", NULL, 0, status);
+  push_job_event(data, data->on_exit, "exit", NULL, 0, status);
 }
 
-static void term_write(char *buf, size_t size, void *data)
+static void term_write(char *buf, size_t size, void *d)
 {
-  Job *job = ((TerminalJobData *)data)->job;
+  TerminalJobData *data = d;
   WBuffer *wbuf = wstream_new_buffer(xmemdup(buf, size), size, 1, xfree);
-  job_write(job, wbuf);
+  wstream_write(&data->in, wbuf);
 }
 
-static void term_resize(uint16_t width, uint16_t height, void *data)
+static void term_resize(uint16_t width, uint16_t height, void *d)
 {
-  job_resize(((TerminalJobData *)data)->job, width, height);
+  TerminalJobData *data = d;
+  pty_process_resize(&data->proc.pty, width, height);
 }
 
 static void term_close(void *d)
@@ -20421,7 +20413,7 @@ static void term_close(void *d)
   TerminalJobData *data = d;
   if (!data->exited) {
     data->exited = true;
-    job_stop(data->job);
+    process_stop((Process *)&data->proc);
   }
   terminal_destroy(data->term);
   term_job_data_decref(d);
@@ -20448,7 +20440,7 @@ static void on_job_event(Event event)
   if (argc > 0) {
     argv[0].v_type = VAR_NUMBER;
     argv[0].v_lock = 0;
-    argv[0].vval.v_number = ev->job_id;
+    argv[0].vval.v_number = ev->data->id;
   }
 
   if (argc > 1) {
@@ -20479,6 +20471,7 @@ static void on_job_event(Event event)
 end:
   if (!ev->received) {
     // exit event, safe to free job data now
+    pmap_del(uint64_t)(jobs, ev->data->id);
     term_job_data_decref(ev->data);
   }
   xfree(ev);
diff --git a/src/nvim/event/loop.c b/src/nvim/event/loop.c
index c467ae8b96..d90565002e 100644
--- a/src/nvim/event/loop.c
+++ b/src/nvim/event/loop.c
@@ -3,6 +3,7 @@
 #include <uv.h>
 
 #include "nvim/event/loop.h"
+#include "nvim/event/process.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/loop.c.generated.h"
@@ -15,6 +16,10 @@ void loop_init(Loop *loop, void *data)
   loop->uv.data = loop;
   loop->deferred_events = kl_init(Event);
   loop->immediate_events = kl_init(Event);
+  loop->children = kl_init(WatcherPtr);
+  loop->children_stop_requests = 0;
+  uv_signal_init(&loop->uv, &loop->children_watcher);
+  uv_timer_init(&loop->uv, &loop->children_kill_timer);
 }
 
 void loop_poll_events(Loop *loop, int ms)
@@ -113,6 +118,8 @@ void loop_stop(Loop *loop)
 
 void loop_close(Loop *loop)
 {
+  uv_close((uv_handle_t *)&loop->children_watcher, NULL);
+  uv_close((uv_handle_t *)&loop->children_kill_timer, NULL);
   do {
     uv_run(&loop->uv, UV_RUN_DEFAULT);
   } while (uv_loop_close(&loop->uv));
diff --git a/src/nvim/event/loop.h b/src/nvim/event/loop.h
index e5a890dddb..5eb4d32ca8 100644
--- a/src/nvim/event/loop.h
+++ b/src/nvim/event/loop.h
@@ -26,6 +26,10 @@ typedef struct loop {
   uv_loop_t uv;
   klist_t(Event) *deferred_events, *immediate_events;
   int deferred_events_allowed;
+  klist_t(WatcherPtr) *children;
+  uv_signal_t children_watcher;
+  uv_timer_t children_kill_timer;
+  size_t children_stop_requests;
 } Loop;
 
 // Poll for events until a condition or timeout
diff --git a/src/nvim/event/process.c b/src/nvim/event/process.c
new file mode 100644
index 0000000000..2b1f1ae096
--- /dev/null
+++ b/src/nvim/event/process.c
@@ -0,0 +1,325 @@
+#include <assert.h>
+#include <stdlib.h>
+
+#include <uv.h>
+
+#include "nvim/os/shell.h"
+#include "nvim/event/loop.h"
+#include "nvim/event/rstream.h"
+#include "nvim/event/wstream.h"
+#include "nvim/event/process.h"
+#include "nvim/event/uv_process.h"
+#include "nvim/event/pty_process.h"
+#include "nvim/globals.h"
+#include "nvim/log.h"
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "event/process.c.generated.h"
+#endif
+
+// {SIGNAL}_TIMEOUT is the time (in nanoseconds) that a process has to cleanly
+// exit before we send SIGNAL to it
+#define TERM_TIMEOUT 1000000000
+#define KILL_TIMEOUT (TERM_TIMEOUT * 2)
+
+#define CLOSE_PROC_STREAM(proc, stream)                          \
+  do {                                                              \
+    if (proc->stream && !proc->stream->closed) {                    \
+      stream_close(proc->stream, NULL);                             \
+    }                                                               \
+  } while (0)
+
+
+bool process_spawn(Loop *loop, Process *proc) FUNC_ATTR_NONNULL_ALL
+{
+  proc->loop = loop;
+  if (proc->in) {
+    uv_pipe_init(&loop->uv, &proc->in->uv.pipe, 0);
+  }
+
+  if (proc->out) {
+    uv_pipe_init(&loop->uv, &proc->out->uv.pipe, 0);
+  }
+
+  if (proc->err) {
+    uv_pipe_init(&loop->uv, &proc->err->uv.pipe, 0);
+  }
+
+  bool success;
+  switch (proc->type) {
+    case kProcessTypeUv:
+      success = uv_process_spawn((UvProcess *)proc);
+      break;
+    case kProcessTypePty:
+      success = pty_process_spawn((PtyProcess *)proc);
+      break;
+    default:
+      abort();
+  }
+
+  if (!success) {
+    if (proc->in) {
+      uv_close((uv_handle_t *)&proc->in->uv.pipe, NULL);
+    }
+    if (proc->out) {
+      uv_close((uv_handle_t *)&proc->out->uv.pipe, NULL);
+    }
+    if (proc->err) {
+      uv_close((uv_handle_t *)&proc->err->uv.pipe, NULL);
+    }
+    process_close(proc);
+    shell_free_argv(proc->argv);
+    proc->status = -1;
+    return false;
+  }
+
+  void *data = proc->data;
+
+  if (proc->in) {
+    stream_init(NULL, proc->in, -1, (uv_stream_t *)&proc->in->uv.pipe, data);
+    proc->in->internal_data = proc;
+    proc->in->internal_close_cb = on_process_stream_close;
+    proc->refcount++;
+  }
+
+  if (proc->out) {
+    stream_init(NULL, proc->out, -1, (uv_stream_t *)&proc->out->uv.pipe, data);
+    proc->out->internal_data = proc;
+    proc->out->internal_close_cb = on_process_stream_close;
+    proc->refcount++;
+  }
+
+  if (proc->err) {
+    stream_init(NULL, proc->err, -1, (uv_stream_t *)&proc->err->uv.pipe, data);
+    proc->err->internal_data = proc;
+    proc->err->internal_close_cb = on_process_stream_close;
+    proc->refcount++;
+  }
+
+  proc->internal_exit_cb = on_process_exit;
+  proc->internal_close_cb = decref;
+  proc->refcount++;
+  kl_push(WatcherPtr, loop->children, proc);
+  return true;
+}
+
+void process_teardown(Loop *loop) FUNC_ATTR_NONNULL_ALL
+{
+  kl_iter(WatcherPtr, loop->children, current) {
+    Process *proc = (*current)->data;
+    uv_kill(proc->pid, SIGTERM);
+    proc->term_sent = true;
+    process_stop(proc);
+  }
+
+  // Wait until all children exit
+  LOOP_POLL_EVENTS_UNTIL(loop, -1, kl_empty(loop->children));
+  pty_process_teardown(loop);
+}
+
+// Wrappers around `stream_close` that protect against double-closing.
+void process_close_streams(Process *proc) FUNC_ATTR_NONNULL_ALL
+{
+  process_close_in(proc);
+  process_close_out(proc);
+  process_close_err(proc);
+}
+
+void process_close_in(Process *proc) FUNC_ATTR_NONNULL_ALL
+{
+  CLOSE_PROC_STREAM(proc, in);
+}
+
+void process_close_out(Process *proc) FUNC_ATTR_NONNULL_ALL
+{
+  CLOSE_PROC_STREAM(proc, out);
+}
+
+void process_close_err(Process *proc) FUNC_ATTR_NONNULL_ALL
+{
+  CLOSE_PROC_STREAM(proc, err);
+}
+
+/// Synchronously wait for a process to finish
+///
+/// @param process The Process instance
+/// @param ms Number of milliseconds to wait, 0 for not waiting, -1 for
+///        waiting until the process quits.
+/// @return returns the status code of the exited process. -1 if the process is
+///         still running and the `timeout` has expired. Note that this is
+///         indistinguishable from the process returning -1 by itself. Which
+///         is possible on some OS. Returns -2 if an user has interruped the
+///         wait.
+int process_wait(Process *proc, int ms) FUNC_ATTR_NONNULL_ALL
+{
+  // The default status is -1, which represents a timeout
+  int status = -1;
+  bool interrupted = false;
+
+  // Increase refcount to stop the exit callback from being called(and possibly
+  // being freed) before we have a chance to get the status.
+  proc->refcount++;
+  LOOP_POLL_EVENTS_UNTIL(proc->loop, ms,
+      // Until...
+      got_int ||             // interrupted by the user
+      proc->refcount == 1);  // job exited
+
+  // we'll assume that a user frantically hitting interrupt doesn't like
+  // the current job. Signal that it has to be killed.
+  if (got_int) {
+    interrupted = true;
+    got_int = false;
+    process_stop(proc);
+    if (ms == -1) {
+      // We can only return, if all streams/handles are closed and the job
+
+      // exited.
+      LOOP_POLL_EVENTS_UNTIL(proc->loop, -1, proc->refcount == 1);
+    } else {
+      loop_poll_events(proc->loop, 0);
+    }
+  }
+
+  if (proc->refcount == 1) {
+    // Job exited, collect status and manually invoke close_cb to free the job
+    // resources
+    status = interrupted ? -2 : proc->status;
+    decref(proc);
+  } else {
+    proc->refcount--;
+  }
+
+  return status;
+}
+
+/// Ask a process to terminate and eventually kill if it doesn't respond
+void process_stop(Process *proc) FUNC_ATTR_NONNULL_ALL
+{
+  if (proc->stopped_time) {
+    return;
+  }
+
+  proc->stopped_time = os_hrtime();
+  switch (proc->type) {
+    case kProcessTypeUv:
+      // Close the process's stdin. If the process doesn't close its own
+      // stdout/stderr, they will be closed when it exits(possibly due to being
+      // terminated after a timeout)
+      process_close_in(proc);
+      break;
+    case kProcessTypePty:
+      // close all streams for pty processes to send SIGHUP to the process
+      process_close_streams(proc);
+      pty_process_close_master((PtyProcess *)proc);
+      break;
+    default:
+      abort();
+  }
+
+  Loop *loop = proc->loop;
+  if (!loop->children_stop_requests++) {
+    // When there's at least one stop request pending, start a timer that
+    // will periodically check if a signal should be send to a to the job
+    DLOG("Starting job kill timer");
+    uv_timer_start(&loop->children_kill_timer, children_kill_cb, 100, 100);
+  }
+}
+
+/// Iterates the process list sending SIGTERM to stopped processes and SIGKILL
+/// to those that didn't die from SIGTERM after a while(exit_timeout is 0).
+static void children_kill_cb(uv_timer_t *handle)
+{
+  Loop *loop = handle->loop->data;
+  uint64_t now = os_hrtime();
+
+  kl_iter(WatcherPtr, loop->children, current) {
+    Process *proc = (*current)->data;
+    if (!proc->stopped_time) {
+      continue;
+    }
+    uint64_t elapsed = now - proc->stopped_time;
+
+    if (!proc->term_sent && elapsed >= TERM_TIMEOUT) {
+      ILOG("Sending SIGTERM to pid %d", proc->pid);
+      uv_kill(proc->pid, SIGTERM);
+      proc->term_sent = true;
+    } else if (elapsed >= KILL_TIMEOUT) {
+      ILOG("Sending SIGKILL to pid %d", proc->pid);
+      uv_kill(proc->pid, SIGKILL);
+    }
+  }
+}
+
+static void decref(Process *proc)
+{
+  if (--proc->refcount != 0) {
+    return;
+  }
+
+  Loop *loop = proc->loop;
+  kliter_t(WatcherPtr) **node = NULL;
+  kl_iter(WatcherPtr, loop->children, current) {
+    if ((*current)->data == proc) {
+      node = current;
+      break;
+    }
+  }
+
+  assert(node);
+  kl_shift_at(WatcherPtr, loop->children, node);
+  shell_free_argv(proc->argv);
+  if (proc->type == kProcessTypePty) {
+    xfree(((PtyProcess *)proc)->term_name);
+  }
+  if (proc->cb) {
+    proc->cb(proc, proc->status, proc->data);
+  }
+}
+
+static void process_close(Process *proc)
+  FUNC_ATTR_NONNULL_ARG(1)
+{
+  assert(!proc->closed);
+  proc->closed = true;
+  switch (proc->type) {
+    case kProcessTypeUv:
+      uv_process_close((UvProcess *)proc);
+      break;
+    case kProcessTypePty:
+      pty_process_close((PtyProcess *)proc);
+      break;
+    default:
+      abort();
+  }
+}
+
+static void on_process_exit(Process *proc)
+{
+  if (exiting) {
+    on_process_exit_event((Event) {.data = proc});
+  } else {
+    loop_push_event(proc->loop,
+        (Event) {.handler = on_process_exit_event, .data = proc}, false);
+  }
+
+  Loop *loop = proc->loop;
+  if (loop->children_stop_requests && !--loop->children_stop_requests) {
+    // Stop the timer if no more stop requests are pending
+    DLOG("Stopping process kill timer");
+    uv_timer_stop(&loop->children_kill_timer);
+  }
+}
+
+static void on_process_exit_event(Event event)
+{
+  Process *proc = event.data;
+  process_close_streams(proc);
+  process_close(proc);
+}
+
+static void on_process_stream_close(Stream *stream, void *data)
+{
+  Process *proc = data;
+  decref(proc);
+}
+
diff --git a/src/nvim/event/process.h b/src/nvim/event/process.h
new file mode 100644
index 0000000000..5c84a7d1d0
--- /dev/null
+++ b/src/nvim/event/process.h
@@ -0,0 +1,56 @@
+#ifndef NVIM_EVENT_PROCESS_H
+#define NVIM_EVENT_PROCESS_H
+
+#include "nvim/event/loop.h"
+#include "nvim/event/rstream.h"
+#include "nvim/event/wstream.h"
+
+typedef enum {
+  kProcessTypeUv,
+  kProcessTypePty
+} ProcessType;
+
+typedef struct process Process;
+typedef void (*process_exit_cb)(Process *proc, int status, void *data);
+typedef void (*internal_process_cb)(Process *proc);
+
+struct process {
+  ProcessType type;
+  Loop *loop;
+  void *data;
+  int pid, status, refcount;
+  // set to the hrtime of when process_stop was called for the process.
+  uint64_t stopped_time;
+  char **argv;
+  Stream *in, *out, *err;
+  process_exit_cb cb;
+  internal_process_cb internal_exit_cb, internal_close_cb;
+  bool closed, term_sent;
+};
+
+static inline Process process_init(ProcessType type, void *data)
+{
+  return (Process) {
+    .type = type,
+    .data = data,
+    .loop = NULL,
+    .pid = 0,
+    .status = 0,
+    .refcount = 0,
+    .stopped_time = 0,
+    .argv = NULL,
+    .in = NULL,
+    .out = NULL,
+    .err = NULL,
+    .cb = NULL,
+    .closed = false,
+    .term_sent = false,
+    .internal_close_cb = NULL,
+    .internal_exit_cb = NULL
+  };
+}
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "event/process.h.generated.h"
+#endif
+#endif  // NVIM_EVENT_PROCESS_H
diff --git a/src/nvim/os/pty_process.c b/src/nvim/event/pty_process.c
index a8fff2a61d..1e24d7c919 100644
--- a/src/nvim/os/pty_process.c
+++ b/src/nvim/event/pty_process.c
@@ -20,58 +20,39 @@
 
 #include <uv.h>
 
-#include "nvim/func_attr.h"
-#include "nvim/os/job.h"
-#include "nvim/os/job_defs.h"
-#include "nvim/os/job_private.h"
-#include "nvim/os/pty_process.h"
-#include "nvim/memory.h"
-#include "nvim/vim.h"
-#include "nvim/globals.h"
+#include "nvim/lib/klist.h"
+
+#include "nvim/event/loop.h"
+#include "nvim/event/rstream.h"
+#include "nvim/event/wstream.h"
+#include "nvim/event/process.h"
+#include "nvim/event/pty_process.h"
+#include "nvim/log.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/pty_process.c.generated.h"
+# include "event/pty_process.c.generated.h"
 #endif
 
 static const unsigned int KILL_RETRIES = 5;
 static const unsigned int KILL_TIMEOUT = 2;  // seconds
 
-bool pty_process_spawn(Job *job) FUNC_ATTR_NONNULL_ALL
+bool pty_process_spawn(PtyProcess *ptyproc)
+  FUNC_ATTR_NONNULL_ALL
 {
-  PtyProcess *ptyproc = &job->process.pty;
-  ptyproc->tty_fd = -1;
-
-  if (job->opts.writable) {
-    uv_pipe_init(&loop.uv, &ptyproc->proc_stdin, 0);
-    ptyproc->proc_stdin.data = NULL;
-  }
-
-  if (job->opts.stdout_cb) {
-    uv_pipe_init(&loop.uv, &ptyproc->proc_stdout, 0);
-    ptyproc->proc_stdout.data = NULL;
-  }
-
-  if (job->opts.stderr_cb) {
-    uv_pipe_init(&loop.uv, &ptyproc->proc_stderr, 0);
-    ptyproc->proc_stderr.data = NULL;
-  }
-
-  job->proc_stdin = (uv_stream_t *)&ptyproc->proc_stdin;
-  job->proc_stdout = (uv_stream_t *)&ptyproc->proc_stdout;
-  job->proc_stderr = (uv_stream_t *)&ptyproc->proc_stderr;
-
-  int master;
-  ptyproc->winsize = (struct winsize){job->opts.height, job->opts.width, 0, 0};
+  Process *proc = (Process *)ptyproc;
+  uv_signal_start(&proc->loop->children_watcher, chld_handler, SIGCHLD);
+  ptyproc->winsize = (struct winsize){ptyproc->height, ptyproc->width, 0, 0};
   struct termios termios;
   init_termios(&termios);
   uv_disable_stdio_inheritance();
-
+  int master;
   int pid = forkpty(&master, NULL, &termios, &ptyproc->winsize);
 
   if (pid < 0) {
+    ELOG("forkpty failed: %s", strerror(errno));
     return false;
   } else if (pid == 0) {
-    init_child(job);
+    init_child(ptyproc);
     abort();
   }
 
@@ -86,23 +67,18 @@ bool pty_process_spawn(Job *job) FUNC_ATTR_NONNULL_ALL
     goto error;
   }
 
-  if (job->opts.writable
-      && !set_pipe_duplicating_descriptor(master, &ptyproc->proc_stdin)) {
+  if (proc->in && !set_duplicating_descriptor(master, &proc->in->uv.pipe)) {
     goto error;
   }
-
-  if (job->opts.stdout_cb
-      && !set_pipe_duplicating_descriptor(master, &ptyproc->proc_stdout)) {
+  if (proc->out && !set_duplicating_descriptor(master, &proc->out->uv.pipe)) {
     goto error;
   }
-
-  if (job->opts.stderr_cb
-      && !set_pipe_duplicating_descriptor(master, &ptyproc->proc_stderr)) {
+  if (proc->err && !set_duplicating_descriptor(master, &proc->err->uv.pipe)) {
     goto error;
   }
 
   ptyproc->tty_fd = master;
-  job->pid = pid;
+  proc->pid = pid;
   return true;
 
 error:
@@ -117,54 +93,44 @@ error:
   }
   if (child != pid) {
     kill(pid, SIGKILL);
+    waitpid(pid, NULL, 0);
   }
 
   return false;
 }
 
-static bool set_pipe_duplicating_descriptor(int fd, uv_pipe_t *pipe)
+void pty_process_resize(PtyProcess *ptyproc, uint16_t width,
+    uint16_t height)
   FUNC_ATTR_NONNULL_ALL
 {
-  int fd_dup = dup(fd);
-  if (fd_dup < 0) {
-    ELOG("Failed to dup descriptor %d: %s", fd, strerror(errno));
-    return false;
-  }
-  int uv_result = uv_pipe_open(pipe, fd_dup);
-  if (uv_result) {
-    ELOG("Failed to set pipe to descriptor %d: %s",
-         fd_dup, uv_strerror(uv_result));
-    close(fd_dup);
-    return false;
-  }
-  return true;
+  ptyproc->winsize = (struct winsize){height, width, 0, 0};
+  ioctl(ptyproc->tty_fd, TIOCSWINSZ, &ptyproc->winsize);
 }
 
-void pty_process_close(Job *job) FUNC_ATTR_NONNULL_ALL
+void pty_process_close(PtyProcess *ptyproc)
+  FUNC_ATTR_NONNULL_ALL
 {
-  pty_process_close_master(job);
-  job_close_streams(job);
-  job_decref(job);
+  pty_process_close_master(ptyproc);
+  Process *proc = (Process *)ptyproc;
+  if (proc->internal_close_cb) {
+    proc->internal_close_cb(proc);
+  }
 }
 
-void pty_process_close_master(Job *job) FUNC_ATTR_NONNULL_ALL
+void pty_process_close_master(PtyProcess *ptyproc) FUNC_ATTR_NONNULL_ALL
 {
-  PtyProcess *ptyproc = &job->process.pty;
   if (ptyproc->tty_fd >= 0) {
     close(ptyproc->tty_fd);
     ptyproc->tty_fd = -1;
   }
 }
 
-void pty_process_resize(Job *job, uint16_t width, uint16_t height)
-  FUNC_ATTR_NONNULL_ALL
+void pty_process_teardown(Loop *loop)
 {
-  PtyProcess *ptyproc = &job->process.pty;
-  ptyproc->winsize = (struct winsize){height, width, 0, 0};
-  ioctl(ptyproc->tty_fd, TIOCSWINSZ, &ptyproc->winsize);
+  uv_signal_stop(&loop->children_watcher);
 }
 
-static void init_child(Job *job) FUNC_ATTR_NONNULL_ALL
+static void init_child(PtyProcess *ptyproc) FUNC_ATTR_NONNULL_ALL
 {
   unsetenv("COLUMNS");
   unsetenv("LINES");
@@ -179,8 +145,8 @@ static void init_child(Job *job) FUNC_ATTR_NONNULL_ALL
   signal(SIGTERM, SIG_DFL);
   signal(SIGALRM, SIG_DFL);
 
-  setenv("TERM", job->opts.term_name ? job->opts.term_name : "ansi", 1);
-  execvp(job->opts.argv[0], job->opts.argv);
+  setenv("TERM", ptyproc->term_name ? ptyproc->term_name : "ansi", 1);
+  execvp(ptyproc->process.argv[0], ptyproc->process.argv);
   fprintf(stderr, "execvp failed: %s\n", strerror(errno));
 }
 
@@ -239,3 +205,50 @@ static void init_termios(struct termios *termios) FUNC_ATTR_NONNULL_ALL
   termios->c_cc[VMIN]     = 1;
   termios->c_cc[VTIME]    = 0;
 }
+
+static bool set_duplicating_descriptor(int fd, uv_pipe_t *pipe)
+  FUNC_ATTR_NONNULL_ALL
+{
+  int fd_dup = dup(fd);
+  if (fd_dup < 0) {
+    ELOG("Failed to dup descriptor %d: %s", fd, strerror(errno));
+    return false;
+  }
+  int uv_result = uv_pipe_open(pipe, fd_dup);
+  if (uv_result) {
+    ELOG("Failed to set pipe to descriptor %d: %s",
+         fd_dup, uv_strerror(uv_result));
+    close(fd_dup);
+    return false;
+  }
+  return true;
+}
+
+static void chld_handler(uv_signal_t *handle, int signum)
+{
+  int stat = 0;
+  int pid;
+
+  do {
+    pid = waitpid(-1, &stat, WNOHANG);
+  } while (pid < 0 && errno == EINTR);
+
+  if (pid <= 0) {
+    return;
+  }
+
+  Loop *loop = handle->loop->data;
+
+  kl_iter(WatcherPtr, loop->children, current) {
+    Process *proc = (*current)->data;
+    if (proc->pid == pid) {
+      if (WIFEXITED(stat)) {
+        proc->status = WEXITSTATUS(stat);
+      } else if (WIFSIGNALED(stat)) {
+        proc->status = WTERMSIG(stat);
+      }
+      proc->internal_exit_cb(proc);
+      break;
+    }
+  }
+}
diff --git a/src/nvim/event/pty_process.h b/src/nvim/event/pty_process.h
new file mode 100644
index 0000000000..a12b5489c5
--- /dev/null
+++ b/src/nvim/event/pty_process.h
@@ -0,0 +1,30 @@
+#ifndef NVIM_EVENT_PTY_PROCESS_H
+#define NVIM_EVENT_PTY_PROCESS_H
+
+#include <sys/ioctl.h>
+
+#include "nvim/event/process.h"
+
+typedef struct pty_process {
+  Process process;
+  char *term_name;
+  uint16_t width, height;
+  struct winsize winsize;
+  int tty_fd;
+} PtyProcess;
+
+static inline PtyProcess pty_process_init(void *data)
+{
+  PtyProcess rv;
+  rv.process = process_init(kProcessTypePty, data);
+  rv.term_name = NULL;
+  rv.width = 80;
+  rv.height = 24;
+  rv.tty_fd = -1;
+  return rv;
+}
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "event/pty_process.h.generated.h"
+#endif
+#endif  // NVIM_EVENT_PTY_PROCESS_H
diff --git a/src/nvim/event/uv_process.c b/src/nvim/event/uv_process.c
new file mode 100644
index 0000000000..21c2fd1790
--- /dev/null
+++ b/src/nvim/event/uv_process.c
@@ -0,0 +1,77 @@
+#include <assert.h>
+
+#include <uv.h>
+
+#include "nvim/event/loop.h"
+#include "nvim/event/rstream.h"
+#include "nvim/event/wstream.h"
+#include "nvim/event/process.h"
+#include "nvim/event/uv_process.h"
+#include "nvim/log.h"
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "event/uv_process.c.generated.h"
+#endif
+
+bool uv_process_spawn(UvProcess *uvproc)
+  FUNC_ATTR_NONNULL_ALL
+{
+  Process *proc = (Process *)uvproc;
+  uvproc->uvopts.file = proc->argv[0];
+  uvproc->uvopts.args = proc->argv;
+  uvproc->uvopts.flags = UV_PROCESS_WINDOWS_HIDE;
+  uvproc->uvopts.exit_cb = exit_cb;
+  uvproc->uvopts.cwd = NULL;
+  uvproc->uvopts.env = NULL;
+  uvproc->uvopts.stdio = uvproc->uvstdio;
+  uvproc->uvopts.stdio_count = 3;
+  uvproc->uvstdio[0].flags = UV_IGNORE;
+  uvproc->uvstdio[1].flags = UV_IGNORE;
+  uvproc->uvstdio[2].flags = UV_IGNORE;
+  uvproc->uv.data = proc;
+
+  if (proc->in) {
+    uvproc->uvstdio[0].flags = UV_CREATE_PIPE | UV_READABLE_PIPE;
+    uvproc->uvstdio[0].data.stream = (uv_stream_t *)&proc->in->uv.pipe;
+  }
+
+  if (proc->out) {
+    uvproc->uvstdio[1].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE;
+    uvproc->uvstdio[1].data.stream = (uv_stream_t *)&proc->out->uv.pipe;
+  }
+
+  if (proc->err) {
+    uvproc->uvstdio[2].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE;
+    uvproc->uvstdio[2].data.stream = (uv_stream_t *)&proc->err->uv.pipe;
+  }
+
+  int status;
+  if ((status = uv_spawn(&proc->loop->uv, &uvproc->uv, &uvproc->uvopts))) {
+    ELOG("uv_spawn failed: %s", uv_strerror(status));
+    return false;
+  }
+
+  proc->pid = uvproc->uv.pid;
+  return true;
+}
+
+void uv_process_close(UvProcess *uvproc)
+  FUNC_ATTR_NONNULL_ARG(1)
+{
+  uv_close((uv_handle_t *)&uvproc->uv, close_cb);
+}
+
+static void close_cb(uv_handle_t *handle)
+{
+  Process *proc = handle->data;
+  if (proc->internal_close_cb) {
+    proc->internal_close_cb(proc);
+  }
+}
+
+static void exit_cb(uv_process_t *handle, int64_t status, int term_signal)
+{
+  Process *proc = handle->data;
+  proc->status = (int)status;
+  proc->internal_exit_cb(proc);
+}
diff --git a/src/nvim/event/uv_process.h b/src/nvim/event/uv_process.h
new file mode 100644
index 0000000000..a17f1446b3
--- /dev/null
+++ b/src/nvim/event/uv_process.h
@@ -0,0 +1,25 @@
+#ifndef NVIM_EVENT_UV_PROCESS_H
+#define NVIM_EVENT_UV_PROCESS_H
+
+#include <uv.h>
+
+#include "nvim/event/process.h"
+
+typedef struct uv_process {
+  Process process;
+  uv_process_t uv;
+  uv_process_options_t uvopts;
+  uv_stdio_container_t uvstdio[3];
+} UvProcess;
+
+static inline UvProcess uv_process_init(void *data)
+{
+  UvProcess rv;
+  rv.process = process_init(kProcessTypeUv, data);
+  return rv;
+}
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "event/uv_process.h.generated.h"
+#endif
+#endif  // NVIM_EVENT_UV_PROCESS_H
diff --git a/src/nvim/lib/klist.h b/src/nvim/lib/klist.h
index 10d6846133..1280a927e8 100644
--- a/src/nvim/lib/klist.h
+++ b/src/nvim/lib/klist.h
@@ -136,6 +136,6 @@
 // `break` statement is executed before the next iteration.
 #define kl_iter(name, kl, p) kl_iter_at(name, kl, p, NULL)
 #define kl_iter_at(name, kl, p, h) \
-  for (kl1_##name *p = h ? h : kl->head; p != kl->tail; p = p->next)
+  for (kl1_##name **p = h ? h : &kl->head; *p != kl->tail; p = &(*p)->next)
 
 #endif
diff --git a/src/nvim/main.c b/src/nvim/main.c
index ca55469730..e2ae63e134 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -63,7 +63,7 @@
 #include "nvim/os/time.h"
 #include "nvim/event/loop.h"
 #include "nvim/os/signal.h"
-#include "nvim/os/job.h"
+#include "nvim/event/process.h"
 #include "nvim/msgpack_rpc/defs.h"
 #include "nvim/msgpack_rpc/helpers.h"
 #include "nvim/msgpack_rpc/server.h"
@@ -149,7 +149,6 @@ void event_init(void)
   // `event_poll`
   // Signals
   signal_init();
-  job_init();
   // finish mspgack-rpc initialization
   channel_init();
   server_init();
@@ -165,7 +164,7 @@ void event_teardown(void)
   loop_process_all_events(&loop);
   input_stop();
   channel_teardown();
-  job_teardown();
+  process_teardown(&loop);
   server_teardown();
   signal_teardown();
   terminal_teardown();
diff --git a/src/nvim/msgpack_rpc/channel.c b/src/nvim/msgpack_rpc/channel.c
index 577965e5ba..861614f147 100644
--- a/src/nvim/msgpack_rpc/channel.c
+++ b/src/nvim/msgpack_rpc/channel.c
@@ -10,11 +10,10 @@
 #include "nvim/msgpack_rpc/channel.h"
 #include "nvim/msgpack_rpc/remote_ui.h"
 #include "nvim/event/loop.h"
+#include "nvim/event/uv_process.h"
 #include "nvim/event/rstream.h"
 #include "nvim/event/wstream.h"
 #include "nvim/event/socket.h"
-#include "nvim/os/job.h"
-#include "nvim/os/job_defs.h"
 #include "nvim/msgpack_rpc/helpers.h"
 #include "nvim/vim.h"
 #include "nvim/ascii.h"
@@ -35,7 +34,7 @@
 
 typedef enum {
   kChannelTypeSocket,
-  kChannelTypeJob,
+  kChannelTypeProc,
   kChannelTypeStdio
 } ChannelType;
 
@@ -54,9 +53,14 @@ typedef struct {
   ChannelType type;
   msgpack_unpacker *unpacker;
   union {
-    Job *job;
     Stream stream;
     struct {
+      UvProcess uvproc;
+      Stream in;
+      Stream out;
+      Stream err;
+    } process;
+    struct {
       Stream in;
       Stream out;
     } std;
@@ -110,34 +114,35 @@ void channel_teardown(void)
   });
 }
 
-/// Creates an API channel by starting a job and connecting to its
+/// Creates an API channel by starting a process and connecting to its
 /// stdin/stdout. stderr is forwarded to the editor error stream.
 ///
 /// @param argv The argument vector for the process. [consumed]
 /// @return The channel id (> 0), on success.
 ///         0, on error.
-uint64_t channel_from_job(char **argv)
-{
-  Channel *channel = register_channel(kChannelTypeJob);
-  incref(channel);  // job channels are only closed by the exit_cb
-
-  int status;
-  JobOptions opts = JOB_OPTIONS_INIT;
-  opts.argv = argv;
-  opts.data = channel;
-  opts.stdout_cb = job_out;
-  opts.stderr_cb = job_err;
-  opts.exit_cb = job_exit;
-  channel->data.job = job_start(opts, &status);
-
-  if (status <= 0) {
-    if (status == 0) {  // Two decrefs needed if status == 0.
-      decref(channel);  // Only one needed if status < 0,
-    }                   // because exit_cb will do the second one.
+uint64_t channel_from_process(char **argv)
+{
+  Channel *channel = register_channel(kChannelTypeProc);
+  channel->data.process.uvproc = uv_process_init(channel);
+  Process *proc = &channel->data.process.uvproc.process;
+  proc->argv = argv;
+  proc->in = &channel->data.process.in;
+  proc->out = &channel->data.process.out;
+  proc->err = &channel->data.process.err;
+  proc->cb = process_exit;
+  if (!process_spawn(&loop, proc)) {
+    loop_poll_events(&loop, 0);
     decref(channel);
     return 0;
   }
 
+  incref(channel);  // process channels are only closed by the exit_cb
+  wstream_init(proc->in, 0);
+  rstream_init(proc->out, 0);
+  rstream_start(proc->out, parse_msgpack);
+  rstream_init(proc->err, 0);
+  rstream_start(proc->err, forward_stderr);
+
   return channel->id;
 }
 
@@ -319,24 +324,17 @@ static void channel_from_stdio(void)
   wstream_init_fd(&loop, &channel->data.std.out, 1, 0, NULL);
 }
 
-static void job_out(Stream *stream, RBuffer *buf, void *data, bool eof)
-{
-  Job *job = data;
-  parse_msgpack(stream, buf, job_data(job), eof);
-}
-
-static void job_err(Stream *stream, RBuffer *rbuf, void *data, bool eof)
+static void forward_stderr(Stream *stream, RBuffer *rbuf, void *data, bool eof)
 {
   while (rbuffer_size(rbuf)) {
     char buf[256];
     size_t read = rbuffer_read(rbuf, buf, sizeof(buf) - 1);
     buf[read] = NUL;
-    ELOG("Channel %" PRIu64 " stderr: %s",
-         ((Channel *)job_data(data))->id, buf);
+    ELOG("Channel %" PRIu64 " stderr: %s", ((Channel *)data)->id, buf);
   }
 }
 
-static void job_exit(Job *job, int status, void *data)
+static void process_exit(Process *proc, int status, void *data)
 {
   decref(data);
 }
@@ -511,8 +509,8 @@ static bool channel_write(Channel *channel, WBuffer *buffer)
     case kChannelTypeSocket:
       success = wstream_write(&channel->data.stream, buffer);
       break;
-    case kChannelTypeJob:
-      success = job_write(channel->data.job, buffer);
+    case kChannelTypeProc:
+      success = wstream_write(&channel->data.process.in, buffer);
       break;
     case kChannelTypeStdio:
       success = wstream_write(&channel->data.std.out, buffer);
@@ -627,7 +625,7 @@ static void unsubscribe(Channel *channel, char *event)
   xfree(event_string);
 }
 
-/// Close the channel streams/job and free the channel resources.
+/// Close the channel streams/process and free the channel resources.
 static void close_channel(Channel *channel)
 {
   if (channel->closed) {
@@ -640,9 +638,9 @@ static void close_channel(Channel *channel)
     case kChannelTypeSocket:
       stream_close(&channel->data.stream, close_cb);
       break;
-    case kChannelTypeJob:
-      if (channel->data.job) {
-        job_stop(channel->data.job);
+    case kChannelTypeProc:
+      if (!channel->data.process.uvproc.process.closed) {
+        process_stop(&channel->data.process.uvproc.process);
       }
       break;
     case kChannelTypeStdio:
diff --git a/src/nvim/os/job.c b/src/nvim/os/job.c
deleted file mode 100644
index 71419cefca..0000000000
--- a/src/nvim/os/job.c
+++ /dev/null
@@ -1,444 +0,0 @@
-#include <stdint.h>
-#include <stdbool.h>
-
-#include <uv.h>
-
-#include "nvim/event/loop.h"
-#include "nvim/event/time.h"
-#include "nvim/event/signal.h"
-#include "nvim/event/rstream.h"
-#include "nvim/event/wstream.h"
-#include "nvim/os/job.h"
-#include "nvim/os/job_defs.h"
-#include "nvim/os/job_private.h"
-#include "nvim/os/pty_process.h"
-#include "nvim/os/time.h"
-#include "nvim/vim.h"
-#include "nvim/memory.h"
-
-#ifdef HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-
-// {SIGNAL}_TIMEOUT is the time (in nanoseconds) that a job has to cleanly exit
-// before we send SIGNAL to it
-#define TERM_TIMEOUT 1000000000
-#define KILL_TIMEOUT (TERM_TIMEOUT * 2)
-#define JOB_BUFFER_SIZE 0xFFFF
-
-#define close_job_stream(job, stream)                                      \
-  do {                                                                     \
-    if (!job->stream.closed) {                                             \
-      stream_close(&job->stream, on_##stream_close);                       \
-    }                                                                      \
-  } while (0)
-
-#define close_job_in(job) close_job_stream(job, in)
-#define close_job_out(job) close_job_stream(job, out)
-#define close_job_err(job) close_job_stream(job, err)
-
-Job *table[MAX_RUNNING_JOBS] = {NULL};
-size_t stop_requests = 0;
-TimeWatcher job_stop_timer;
-SignalWatcher schld;
-
-// Some helpers shared in this module
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/job.c.generated.h"
-#endif
-// Callbacks for libuv
-
-/// Initializes job control resources
-void job_init(void)
-{
-  uv_disable_stdio_inheritance();
-  time_watcher_init(&loop, &job_stop_timer, NULL);
-  signal_watcher_init(&loop, &schld, NULL);
-  signal_watcher_start(&schld, chld_handler, SIGCHLD);
-}
-
-/// Releases job control resources and terminates running jobs
-void job_teardown(void)
-{
-  // Stop all jobs
-  for (int i = 0; i < MAX_RUNNING_JOBS; i++) {
-    Job *job;
-    if ((job = table[i]) != NULL) {
-      uv_kill(job->pid, SIGTERM);
-      job->term_sent = true;
-      job_stop(job);
-    }
-  }
-
-  // Wait until all jobs are closed
-  LOOP_POLL_EVENTS_UNTIL(&loop, -1, !stop_requests);
-  signal_watcher_stop(&schld);
-  signal_watcher_close(&schld, NULL);
-  // Close the timer
-  time_watcher_close(&job_stop_timer, NULL);
-}
-
-/// Tries to start a new job.
-///
-/// @param[out] status The job id if the job started successfully, 0 if the job
-///             table is full, -1 if the program could not be executed.
-/// @return The job pointer if the job started successfully, NULL otherwise
-Job *job_start(JobOptions opts, int *status)
-{
-  int i;
-  Job *job;
-
-  // Search for a free slot in the table
-  for (i = 0; i < MAX_RUNNING_JOBS; i++) {
-    if (table[i] == NULL) {
-      break;
-    }
-  }
-
-  if (i == MAX_RUNNING_JOBS) {
-    // No free slots
-    shell_free_argv(opts.argv);
-    *status = 0;
-    return NULL;
-  }
-
-  job = xmalloc(sizeof(Job));
-  // Initialize
-  job->id = i + 1;
-  *status = job->id;
-  job->status = -1;
-  job->refcount = 1;
-  job->stopped_time = 0;
-  job->term_sent = false;
-  job->opts = opts;
-  job->closed = false;
-  job->in.closed = true;
-  job->out.closed = true;
-  job->err.closed = true;
-
-  // Spawn the job
-  if (!process_spawn(job)) {
-    if (job->opts.writable) {
-      uv_close((uv_handle_t *)job->proc_stdin, NULL);
-    }
-    if (job->opts.stdout_cb) {
-      uv_close((uv_handle_t *)job->proc_stdout, NULL);
-    }
-    if (job->opts.stderr_cb) {
-      uv_close((uv_handle_t *)job->proc_stderr, NULL);
-    }
-    process_close(job);
-    loop_poll_events(&loop, 0);
-    *status = -1;
-    return NULL;
-  }
-
-  if (opts.writable) {
-    job->refcount++;
-    wstream_init_stream(&job->in, job->proc_stdin, opts.maxmem, job);
-  }
-
-  // Start the readable streams
-  if (opts.stdout_cb) {
-    job->refcount++;
-    rstream_init_stream(&job->out, job->proc_stdout, JOB_BUFFER_SIZE, job);
-    rstream_start(&job->out, read_cb);
-  }
-
-  if (opts.stderr_cb) {
-    job->refcount++;
-    rstream_init_stream(&job->err, job->proc_stderr, JOB_BUFFER_SIZE, job);
-    rstream_start(&job->err, read_cb);
-  }
-  // Save the job to the table
-  table[i] = job;
-
-  return job;
-}
-
-/// Finds a job instance by id
-///
-/// @param id The job id
-/// @return the Job instance
-Job *job_find(int id)
-{
-  Job *job;
-
-  if (id <= 0 || id > MAX_RUNNING_JOBS || !(job = table[id - 1])
-      || job->stopped_time) {
-    return NULL;
-  }
-
-  return job;
-}
-
-/// Terminates a job. This is a non-blocking operation, but if the job exists
-/// it's guaranteed to succeed(SIGKILL will eventually be sent)
-///
-/// @param job The Job instance
-void job_stop(Job *job)
-{
-  if (job->stopped_time) {
-    return;
-  }
-
-  job->stopped_time = os_hrtime();
-  if (job->opts.pty) {
-    // close all streams for pty jobs to send SIGHUP to the process
-    job_close_streams(job);
-    pty_process_close_master(job);
-  } else {
-    // Close the job's stdin. If the job doesn't close its own stdout/stderr,
-    // they will be closed when the job exits(possibly due to being terminated
-    // after a timeout)
-    job_close_in(job);
-  }
-
-  if (!stop_requests++) {
-    // When there's at least one stop request pending, start a timer that
-    // will periodically check if a signal should be send to a to the job
-    DLOG("Starting job kill timer");
-    time_watcher_start(&job_stop_timer, job_stop_timer_cb, 100, 100);
-  }
-}
-
-/// job_wait - synchronously wait for a job to finish
-///
-/// @param job The job instance
-/// @param ms Number of milliseconds to wait, 0 for not waiting, -1 for
-///        waiting until the job quits.
-/// @return returns the status code of the exited job. -1 if the job is
-///         still running and the `timeout` has expired. Note that this is
-///         indistinguishable from the process returning -1 by itself. Which
-///         is possible on some OS. Returns -2 if the job was interrupted.
-int job_wait(Job *job, int ms) FUNC_ATTR_NONNULL_ALL
-{
-  // The default status is -1, which represents a timeout
-  int status = -1;
-  bool interrupted = false;
-
-  // Increase refcount to stop the job from being freed before we have a
-  // chance to get the status.
-  job->refcount++;
-  LOOP_POLL_EVENTS_UNTIL(&loop, ms,
-      // Until...
-      got_int ||                // interrupted by the user
-      job->refcount == 1);  // job exited
-
-  // we'll assume that a user frantically hitting interrupt doesn't like
-  // the current job. Signal that it has to be killed.
-  if (got_int) {
-    interrupted = true;
-    got_int = false;
-    job_stop(job);
-    if (ms == -1) {
-      // We can only return, if all streams/handles are closed and the job
-      // exited.
-      LOOP_POLL_EVENTS_UNTIL(&loop, -1, job->refcount == 1);
-    } else {
-      loop_poll_events(&loop, 0);
-    }
-  }
-
-  if (job->refcount == 1) {
-    // Job exited, collect status and manually invoke close_cb to free the job
-    // resources
-    status = interrupted ? -2 : job->status;
-    job_close_streams(job);
-    job_decref(job);
-  } else {
-    job->refcount--;
-  }
-
-  return status;
-}
-
-/// Close the pipe used to write to the job.
-///
-/// This can be used for example to indicate to the job process that no more
-/// input is coming, and that it should shut down cleanly.
-///
-/// It has no effect when the input pipe doesn't exist or was already
-/// closed.
-///
-/// @param job The job instance
-void job_close_in(Job *job) FUNC_ATTR_NONNULL_ALL
-{
-  close_job_in(job);
-}
-
-// Close the job stdout stream.
-void job_close_out(Job *job) FUNC_ATTR_NONNULL_ALL
-{
-  close_job_out(job);
-}
-
-// Close the job stderr stream.
-void job_close_err(Job *job) FUNC_ATTR_NONNULL_ALL
-{
-  close_job_out(job);
-}
-
-/// All writes that complete after calling this function will be reported
-/// to `cb`.
-///
-/// Use this function to be notified about the status of an in-flight write.
-///
-/// @see {wstream_set_write_cb}
-///
-/// @param job The job instance
-/// @param cb The function that will be called on write completion or
-///        failure. It will be called with the job as the `data` argument.
-void job_write_cb(Job *job, stream_write_cb cb) FUNC_ATTR_NONNULL_ALL
-{
-  wstream_set_write_cb(&job->in, cb);
-}
-
-/// Writes data to the job's stdin. This is a non-blocking operation, it
-/// returns when the write request was sent.
-///
-/// @param job The Job instance
-/// @param buffer The buffer which contains the data to be written
-/// @return true if the write request was successfully sent, false if writing
-///         to the job stream failed (possibly because the OS buffer is full)
-bool job_write(Job *job, WBuffer *buffer)
-{
-  return wstream_write(&job->in, buffer);
-}
-
-/// Get the job id
-///
-/// @param job A pointer to the job
-/// @return The job id
-int job_id(Job *job)
-{
-  return job->id;
-}
-
-// Get the job pid
-int job_pid(Job *job)
-{
-  return job->pid;
-}
-
-/// Get data associated with a job
-///
-/// @param job A pointer to the job
-/// @return The job data
-void *job_data(Job *job)
-{
-  return job->opts.data;
-}
-
-/// Resize the window for a pty job
-bool job_resize(Job *job, uint16_t width, uint16_t height)
-{
-  if (!job->opts.pty) {
-    return false;
-  }
-  pty_process_resize(job, width, height);
-  return true;
-}
-
-void job_close_streams(Job *job)
-{
-  close_job_in(job);
-  close_job_out(job);
-  close_job_err(job);
-}
-
-JobOptions *job_opts(Job *job)
-{
-  return &job->opts;
-}
-
-/// Iterates the table, sending SIGTERM to stopped jobs and SIGKILL to those
-/// that didn't die from SIGTERM after a while(exit_timeout is 0).
-static void job_stop_timer_cb(TimeWatcher *watcher, void *data)
-{
-  Job *job;
-  uint64_t now = os_hrtime();
-
-  for (size_t i = 0; i < MAX_RUNNING_JOBS; i++) {
-    if ((job = table[i]) == NULL || !job->stopped_time) {
-      continue;
-    }
-
-    uint64_t elapsed = now - job->stopped_time;
-
-    if (!job->term_sent && elapsed >= TERM_TIMEOUT) {
-      ILOG("Sending SIGTERM to job(id: %d)", job->id);
-      uv_kill(job->pid, SIGTERM);
-      job->term_sent = true;
-    } else if (elapsed >= KILL_TIMEOUT) {
-      ILOG("Sending SIGKILL to job(id: %d)", job->id);
-      uv_kill(job->pid, SIGKILL);
-      process_close(job);
-    }
-  }
-}
-
-// Wraps the call to std{out,err}_cb and emits a JobExit event if necessary.
-static void read_cb(Stream *stream, RBuffer *buf, void *data, bool eof)
-{
-  Job *job = data;
-
-  if (stream == &job->out) {
-    job->opts.stdout_cb(stream, buf, data, eof);
-    if (eof) {
-      close_job_out(job);
-    }
-  } else {
-    job->opts.stderr_cb(stream, buf, data, eof);
-    if (eof) {
-      close_job_err(job);
-    }
-  }
-}
-
-static void on_stream_close(Stream *stream, void *data)
-{
-  job_decref(data);
-}
-
-static void job_exited(Event event)
-{
-  Job *job = event.data;
-  process_close(job);
-}
-
-static void chld_handler(SignalWatcher *watcher, int signum, void *data)
-{
-  int stat = 0;
-  int pid;
-
-  do {
-    pid = waitpid(-1, &stat, WNOHANG);
-  } while (pid < 0 && errno == EINTR);
-
-  if (pid <= 0) {
-    return;
-  }
-
-  Job *job = NULL;
-  // find the job corresponding to the exited pid
-  for (int i = 0; i < MAX_RUNNING_JOBS; i++) {
-    if ((job = table[i]) != NULL && job->pid == pid) {
-      if (WIFEXITED(stat)) {
-        job->status = WEXITSTATUS(stat);
-      } else if (WIFSIGNALED(stat)) {
-        job->status = WTERMSIG(stat);
-      }
-      if (exiting) {
-        // don't enqueue more events when exiting
-        process_close(job);
-      } else {
-        loop_push_event(&loop,
-            (Event) {.handler = job_exited, .data = job}, false);
-      }
-      break;
-    }
-  }
-}
-
diff --git a/src/nvim/os/job.h b/src/nvim/os/job.h
deleted file mode 100644
index 2f8bf79a31..0000000000
--- a/src/nvim/os/job.h
+++ /dev/null
@@ -1,20 +0,0 @@
-// Job is a short name we use to refer to child processes that run in parallel
-// with the editor, probably executing long-running tasks and sending updates
-// asynchronously. Communication happens through anonymous pipes connected to
-// the job's std{in,out,err}. They are more like bash/zsh co-processes than the
-// usual shell background job. The name 'Job' was chosen because it applies to
-// the concept while being significantly shorter.
-#ifndef NVIM_OS_JOB_H
-#define NVIM_OS_JOB_H
-
-#include <stdint.h>
-#include <stdbool.h>
-
-#include "nvim/os/job_defs.h"
-#include "nvim/event/rstream.h"
-#include "nvim/event/wstream.h"
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/job.h.generated.h"
-#endif
-#endif  // NVIM_OS_JOB_H
diff --git a/src/nvim/os/job_defs.h b/src/nvim/os/job_defs.h
deleted file mode 100644
index ea7a326404..0000000000
--- a/src/nvim/os/job_defs.h
+++ /dev/null
@@ -1,64 +0,0 @@
-#ifndef NVIM_OS_JOB_DEFS_H
-#define NVIM_OS_JOB_DEFS_H
-
-#include <uv.h>
-
-#include "nvim/event/rstream.h"
-#include "nvim/event/wstream.h"
-
-#define MAX_RUNNING_JOBS 100
-typedef struct job Job;
-
-/// Function called when the job reads data
-///
-/// @param id The job id
-/// @param data Some data associated with the job by the caller
-typedef void (*job_exit_cb)(Job *job, int status, void *data);
-
-// Job startup options
-// job_exit_cb Callback that will be invoked when the job exits
-// maxmem Maximum amount of memory used by the job WStream
-typedef struct {
-  // Argument vector for the process. The first item is the
-  // executable to run.
-  // [consumed]
-  char **argv;
-  // Caller data that will be associated with the job
-  void *data;
-  // If true the job stdin will be available for writing with job_write,
-  // otherwise it will be redirected to /dev/null
-  bool writable;
-  // Callback that will be invoked when data is available on stdout. If NULL
-  // stdout will be redirected to /dev/null.
-  stream_read_cb stdout_cb;
-  // Callback that will be invoked when data is available on stderr. If NULL
-  // stderr will be redirected to /dev/null.
-  stream_read_cb stderr_cb;
-  // Callback that will be invoked when the job has exited and will not send
-  // data
-  job_exit_cb exit_cb;
-  // Maximum memory used by the job's WStream
-  size_t maxmem;
-  // Connect the job to a pseudo terminal
-  bool pty;
-  // Initial window dimensions if the job is connected to a pseudo terminal
-  uint16_t width, height;
-  // Value for the $TERM environment variable. A default value of "ansi" is
-  // assumed if NULL
-  char *term_name;
-} JobOptions;
-
-#define JOB_OPTIONS_INIT ((JobOptions) {                     \
-    .argv = NULL,                                            \
-    .data = NULL,                                            \
-    .writable = true,                                        \
-    .stdout_cb = NULL,                                       \
-    .stderr_cb = NULL,                                       \
-    .exit_cb = NULL,                                         \
-    .maxmem = 0,                                             \
-    .pty = false,                                            \
-    .width = 80,                                             \
-    .height = 24,                                            \
-    .term_name = NULL                                        \
-    })
-#endif  // NVIM_OS_JOB_DEFS_H
diff --git a/src/nvim/os/job_private.h b/src/nvim/os/job_private.h
deleted file mode 100644
index 6bdb24e6cd..0000000000
--- a/src/nvim/os/job_private.h
+++ /dev/null
@@ -1,101 +0,0 @@
-#ifndef NVIM_OS_JOB_PRIVATE_H
-#define NVIM_OS_JOB_PRIVATE_H
-
-#include <stdlib.h>
-
-#include <uv.h>
-
-#include "nvim/event/time.h"
-#include "nvim/event/rstream.h"
-#include "nvim/event/wstream.h"
-#include "nvim/os/pipe_process.h"
-#include "nvim/os/pty_process.h"
-#include "nvim/os/shell.h"
-#include "nvim/log.h"
-#include "nvim/memory.h"
-
-struct job {
-  // Job id the index in the job table plus one.
-  int id;
-  // Process id
-  int pid;
-  // Exit status code of the job process
-  int status;
-  // Number of references to the job. The job resources will only be freed by
-  // close_cb when this is 0
-  int refcount;
-  // Time when job_stop was called for the job.
-  uint64_t stopped_time;
-  // If SIGTERM was already sent to the job(only send one before SIGKILL)
-  bool term_sent;
-  // stdio streams(std{in,out,err})
-  Stream in, out, err;
-  // Libuv streams representing stdin/stdout/stderr
-  uv_stream_t *proc_stdin, *proc_stdout, *proc_stderr;
-  // Extra data set by the process spawner
-  union {
-    UvProcess uv;
-    PtyProcess pty;
-  } process;
-  // If process_close has been called on this job
-  bool closed;
-  // Startup options
-  JobOptions opts;
-};
-
-extern Job *table[];
-extern size_t stop_requests;
-extern TimeWatcher job_stop_timer;
-
-static inline bool process_spawn(Job *job)
-{
-  return job->opts.pty ? pty_process_spawn(job) : pipe_process_spawn(job);
-}
-
-static inline void process_close(Job *job)
-{
-  if (job->closed) {
-    return;
-  }
-  job->closed = true;
-  if (job->opts.pty) {
-    pty_process_close(job);
-  } else {
-    pipe_process_close(job);
-  }
-}
-
-static inline void job_exit_callback(Job *job)
-{
-  // Free the slot now, 'exit_cb' may want to start another job to replace
-  // this one
-  table[job->id - 1] = NULL;
-
-  if (job->opts.exit_cb) {
-    // Invoke the exit callback
-    job->opts.exit_cb(job, job->status, job->opts.data);
-  }
-
-  if (stop_requests && !--stop_requests) {
-    // Stop the timer if no more stop requests are pending
-    DLOG("Stopping job kill timer");
-    time_watcher_stop(&job_stop_timer);
-  }
-}
-
-static inline void job_decref(Job *job)
-{
-  if (--job->refcount == 0) {
-    // Invoke the exit_cb
-    job_exit_callback(job);
-    // Free all memory allocated for the job
-    shell_free_argv(job->opts.argv);
-    if (job->opts.pty) {
-      xfree(job->opts.term_name);
-    }
-    xfree(job);
-  }
-}
-
-
-#endif  // NVIM_OS_JOB_PRIVATE_H
diff --git a/src/nvim/os/pipe_process.c b/src/nvim/os/pipe_process.c
deleted file mode 100644
index 1160015c34..0000000000
--- a/src/nvim/os/pipe_process.c
+++ /dev/null
@@ -1,88 +0,0 @@
-#include <stdbool.h>
-#include <stdlib.h>
-
-#include <uv.h>
-
-#include "nvim/os/job.h"
-#include "nvim/os/job_defs.h"
-#include "nvim/os/job_private.h"
-#include "nvim/os/pipe_process.h"
-#include "nvim/memory.h"
-#include "nvim/vim.h"
-#include "nvim/globals.h"
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/pipe_process.c.generated.h"
-#endif
-
-bool pipe_process_spawn(Job *job)
-{
-  UvProcess *pipeproc = &job->process.uv;
-  pipeproc->proc_opts.file = job->opts.argv[0];
-  pipeproc->proc_opts.args = job->opts.argv;
-  pipeproc->proc_opts.stdio = pipeproc->stdio;
-  pipeproc->proc_opts.stdio_count = 3;
-  pipeproc->proc_opts.flags = UV_PROCESS_WINDOWS_HIDE;
-  pipeproc->proc_opts.exit_cb = exit_cb;
-  pipeproc->proc_opts.cwd = NULL;
-  pipeproc->proc_opts.env = NULL;
-  pipeproc->proc.data = NULL;
-  pipeproc->proc_stdin.data = NULL;
-  pipeproc->proc_stdout.data = NULL;
-  pipeproc->proc_stderr.data = NULL;
-
-  // Initialize the job std{in,out,err}
-  pipeproc->stdio[0].flags = UV_IGNORE;
-  pipeproc->stdio[1].flags = UV_IGNORE;
-  pipeproc->stdio[2].flags = UV_IGNORE;
-
-  pipeproc->proc.data = job;
-
-  if (job->opts.writable) {
-    uv_pipe_init(&loop.uv, &pipeproc->proc_stdin, 0);
-    pipeproc->stdio[0].flags = UV_CREATE_PIPE | UV_READABLE_PIPE;
-    pipeproc->stdio[0].data.stream = (uv_stream_t *)&pipeproc->proc_stdin;
-  }
-
-  if (job->opts.stdout_cb) {
-    uv_pipe_init(&loop.uv, &pipeproc->proc_stdout, 0);
-    pipeproc->stdio[1].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE;
-    pipeproc->stdio[1].data.stream = (uv_stream_t *)&pipeproc->proc_stdout;
-  }
-
-  if (job->opts.stderr_cb) {
-    uv_pipe_init(&loop.uv, &pipeproc->proc_stderr, 0);
-    pipeproc->stdio[2].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE;
-    pipeproc->stdio[2].data.stream = (uv_stream_t *)&pipeproc->proc_stderr;
-  }
-
-  job->proc_stdin = (uv_stream_t *)&pipeproc->proc_stdin;
-  job->proc_stdout = (uv_stream_t *)&pipeproc->proc_stdout;
-  job->proc_stderr = (uv_stream_t *)&pipeproc->proc_stderr;
-
-  if (uv_spawn(&loop.uv, &pipeproc->proc, &pipeproc->proc_opts) != 0) {
-    return false;
-  }
-
-  job->pid = pipeproc->proc.pid;
-  return true;
-}
-
-void pipe_process_close(Job *job)
-{
-  uv_close((uv_handle_t *)&job->process.uv.proc, close_cb);
-}
-
-static void exit_cb(uv_process_t *proc, int64_t status, int term_signal)
-{
-  Job *job = proc->data;
-  job->status = (int)status;
-  pipe_process_close(job);
-}
-
-static void close_cb(uv_handle_t *handle)
-{
-  Job *job = handle->data;
-  job_close_streams(job);
-  job_decref(job);
-}
diff --git a/src/nvim/os/pipe_process.h b/src/nvim/os/pipe_process.h
deleted file mode 100644
index 65e5cfa78f..0000000000
--- a/src/nvim/os/pipe_process.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef NVIM_OS_PIPE_PROCESS_H
-#define NVIM_OS_PIPE_PROCESS_H
-
-#include <uv.h>
-
-typedef struct {
-  // Structures for process spawning/management used by libuv
-  uv_process_t proc;
-  uv_process_options_t proc_opts;
-  uv_stdio_container_t stdio[3];
-  uv_pipe_t proc_stdin, proc_stdout, proc_stderr;
-} UvProcess;
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/pipe_process.h.generated.h"
-#endif
-#endif  // NVIM_OS_PIPE_PROCESS_H
diff --git a/src/nvim/os/pty_process.h b/src/nvim/os/pty_process.h
deleted file mode 100644
index b5a2eba8b3..0000000000
--- a/src/nvim/os/pty_process.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef NVIM_OS_PTY_PROCESS_H
-#define NVIM_OS_PTY_PROCESS_H
-
-#include <sys/ioctl.h>
-
-#include <uv.h>
-
-typedef struct {
-  struct winsize winsize;
-  uv_pipe_t proc_stdin, proc_stdout, proc_stderr;
-  int tty_fd;
-} PtyProcess;
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/pty_process.h.generated.h"
-#endif
-#endif  // NVIM_OS_PTY_PROCESS_H
diff --git a/src/nvim/os/shell.c b/src/nvim/os/shell.c
index 04ac9f1c03..e0d67d4951 100644
--- a/src/nvim/os/shell.c
+++ b/src/nvim/os/shell.c
@@ -9,7 +9,7 @@
 #include "nvim/lib/kvec.h"
 #include "nvim/log.h"
 #include "nvim/event/loop.h"
-#include "nvim/os/job.h"
+#include "nvim/event/uv_process.h"
 #include "nvim/event/rstream.h"
 #include "nvim/os/shell.h"
 #include "nvim/os/signal.h"
@@ -204,17 +204,15 @@ static int do_os_system(char **argv,
   char prog[MAXPATHL];
   xstrlcpy(prog, argv[0], MAXPATHL);
 
-  int status;
-  JobOptions opts = JOB_OPTIONS_INIT;
-  opts.argv = argv;
-  opts.data = &buf;
-  opts.writable = input != NULL;
-  opts.stdout_cb = data_cb;
-  opts.stderr_cb = data_cb;
-  opts.exit_cb = NULL;
-  Job *job = job_start(opts, &status);
-
-  if (status <= 0) {
+  Stream in, out, err;
+  UvProcess uvproc = uv_process_init(&buf);
+  Process *proc = &uvproc.process;
+  proc->argv = argv;
+  proc->in = input != NULL ? &in : NULL;
+  proc->out = &out;
+  proc->err = &err;
+  if (!process_spawn(&loop, proc)) {
+    loop_poll_events(&loop, 0);
     // Failed, probably due to `sh` not being executable
     if (!silent) {
       MSG_PUTS(_("\nCannot execute "));
@@ -224,28 +222,32 @@ static int do_os_system(char **argv,
     return -1;
   }
 
+  if (input != NULL) {
+    wstream_init(proc->in, 0);
+  }
+  rstream_init(proc->out, 0);
+  rstream_start(proc->out, data_cb);
+  rstream_init(proc->err, 0);
+  rstream_start(proc->err, data_cb);
+
   // write the input, if any
   if (input) {
     WBuffer *input_buffer = wstream_new_buffer((char *) input, len, 1, NULL);
 
-    if (!job_write(job, input_buffer)) {
-      // couldn't write, stop the job and tell the user about it
-      job_stop(job);
+    if (!wstream_write(&in, input_buffer)) {
+      // couldn't write, stop the process and tell the user about it
+      process_stop(proc);
       return -1;
     }
     // close the input stream after everything is written
-    job_write_cb(job, shell_write_cb);
-  } else {
-    // close the input stream, let the process know that no more input is
-    // coming
-    job_close_in(job);
+    wstream_set_write_cb(&in, shell_write_cb);
   }
 
   // invoke busy_start here so event_poll_until wont change the busy state for
   // the UI
   ui_busy_start();
   ui_flush();
-  status = job_wait(job, -1);
+  int status = process_wait(proc, -1);
   ui_busy_stop();
 
   // prepare the out parameters if requested
@@ -285,8 +287,7 @@ static void dynamic_buffer_ensure(DynamicBuffer *buf, size_t desired)
 
 static void system_data_cb(Stream *stream, RBuffer *buf, void *data, bool eof)
 {
-  Job *job = data;
-  DynamicBuffer *dbuf = job_data(job);
+  DynamicBuffer *dbuf = data;
 
   size_t nread = buf->size;
   dynamic_buffer_ensure(dbuf, dbuf->len + nread + 1);
@@ -472,6 +473,5 @@ static size_t write_output(char *output, size_t remaining, bool to_buffer,
 
 static void shell_write_cb(Stream *stream, void *data, int status)
 {
-  Job *job = data;
-  job_close_in(job);
+  stream_close(stream, NULL);
 }
diff --git a/src/nvim/os_unix.c b/src/nvim/os_unix.c
index f568f5a7f1..122b3a171d 100644
--- a/src/nvim/os_unix.c
+++ b/src/nvim/os_unix.c
@@ -50,7 +50,6 @@
 #include "nvim/os/input.h"
 #include "nvim/os/shell.h"
 #include "nvim/os/signal.h"
-#include "nvim/os/job.h"
 #include "nvim/msgpack_rpc/helpers.h"
 
 #ifdef HAVE_STROPTS_H