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TODO: "exepath" field (win32: QueryFullProcessImageName())
On unix-likes `ps` is used because the platform-specific APIs are
a nightmare. For reference, below is a (incomplete) attempt:
diff --git a/src/nvim/os/process.c b/src/nvim/os/process.c
index 09769925aca5..99afbbf290c1 100644
--- a/src/nvim/os/process.c
+++ b/src/nvim/os/process.c
@@ -208,3 +210,60 @@ int os_proc_children(int ppid, int **proc_list, size_t *proc_count)
return 0;
}
+/// Gets various properties of the process identified by `pid`.
+///
+/// @param pid Process to inspect.
+/// @return Map of process properties, empty on error.
+Dictionary os_proc_info(int pid)
+{
+ Dictionary pinfo = ARRAY_DICT_INIT;
+#ifdef WIN32
+
+#elif defined(__APPLE__)
+ char buf[PROC_PIDPATHINFO_MAXSIZE];
+ if (proc_pidpath(pid, buf, sizeof(buf))) {
+ name = getName(buf);
+ PUT(pinfo, "exepath", STRING_OBJ(cstr_to_string(buf)));
+ return name;
+ } else {
+ ILOG("proc_pidpath() failed for pid: %d", pid);
+ }
+#elif defined(BSD)
+# if defined(__FreeBSD__)
+# define KP_COMM(o) o.ki_comm
+# else
+# define KP_COMM(o) o.p_comm
+# endif
+ struct kinfo_proc *proc = kinfo_getproc(pid);
+ if (proc) {
+ PUT(pinfo, "name", cstr_to_string(KP_COMM(proc)));
+ xfree(proc);
+ } else {
+ ILOG("kinfo_getproc() failed for pid: %d", pid);
+ }
+
+#elif defined(__linux__)
+ char fname[256] = { 0 };
+ char buf[MAXPATHL];
+ snprintf(fname, sizeof(fname), "/proc/%d/comm", pid);
+ FILE *fp = fopen(fname, "r");
+ // FileDescriptor *f = file_open_new(&error, fname, kFileReadOnly, 0);
+ // ptrdiff_t file_read(FileDescriptor *const fp, char *const ret_buf,
+ // const size_t size)
+ if (fp == NULL) {
+ ILOG("fopen() of /proc/%d/comm failed", pid);
+ } else {
+ size_t n = fread(buf, sizeof(char), sizeof(buf) - 1, fp);
+ if (n == 0) {
+ WLOG("fread() of /proc/%d/comm failed", pid);
+ } else {
+ size_t end = MIN(sizeof(buf) - 1, n);
+ end = (end > 0 && buf[end - 1] == '\n') ? end - 1 : end;
+ buf[end] = '\0';
+ PUT(pinfo, "name", STRING_OBJ(cstr_to_string(buf)));
+ }
+ }
+ fclose(fp);
+#endif
+ return pinfo;
+}
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Apparently on travis OS X systems it crashes when cleaning up streams with
stdout closed:
(lldb) bt all
* thread #1: tid = 0x0000, 0x00007fff8703df06 libsystem_kernel.dylib`__pthread_kill + 10, stop reason = signal SIGSTOP
* frame #0: 0x00007fff8703df06 libsystem_kernel.dylib`__pthread_kill + 10
frame #1: 0x00007fff93a764ec libsystem_pthread.dylib`pthread_kill + 90
frame #2: 0x00007fff97c056df libsystem_c.dylib`abort + 129
frame #3: 0x00007fff97bccdd8 libsystem_c.dylib`__assert_rtn + 321
frame #4: 0x0000000107a4e106 nvim`uv__close(fd=<unavailable>) + 102 at core.c:521
frame #5: 0x0000000107a5307d nvim`uv__loop_close(loop=0x00007fff5847c018) + 77 at loop.c:118
frame #6: 0x0000000107a4d149 nvim`uv_loop_close(loop=0x00007fff5847c018) + 57 at uv-common.c:626
frame #7: 0x000000010783e5bc nvim`stream_set_blocking(fd=0, blocking=true) + 204 at stream.c:34
frame #8: 0x000000010795d66b nvim`mch_exit(r=0) + 91 at os_unix.c:147
frame #9: 0x00000001078d5663 nvim`command_line_scan(parmp=0x00007fff5847c760) + 1779 at main.c:787
frame #10: 0x00000001078d4393 nvim`main(argc=2, argv=0x00007fff5847c898) + 163 at main.c:249
frame #11: 0x00007fff8cdd65ad libdyld.dylib`start + 1
frame #12: 0x00007fff8cdd65ad libdyld.dylib`start + 1
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