Move the harness to its own CMake project.

1 files changed, 69 insertions, 0 deletions

diff --git a/harness/src/main.c b/harness/src/main.c
new file mode 100644
index 0000000..1580bd6
--- /dev/null
+++ b/harness/src/main.c
@@ -0,0 +1,69 @@
+#include <stdio.h>
+
+#include <dlfcn.h>
+
+typedef void* dllib_t;
+
+typedef void* opqst_t;
+
+dllib_t open_library(const char* library, int* err)
+{
+  dllib_t lib = dlopen(library, RTLD_LAZY);
+
+  if (!lib) {
+    fprintf(stderr, "Error opening shared library: %s\n", dlerror());
+    *err = 1;
+  }
+  *err = 0;
+  return lib;
+}
+
+void* getsym(dllib_t handle, char* sym, int* err)
+{
+  void* ret = dlsym(handle, sym);
+  if (!ret) {
+    fprintf(stderr, "Unable to read symbol '%s'\n", sym);
+    *err |= 1;
+    return NULL;
+  }
+  return ret;
+}
+
+void use_library(int argc, char** argv, dllib_t lib, int* err)
+{
+  *err = 0;
+
+  opqst_t (*init)(int* argc, char*** argv) = getsym(lib, "plugin_init", err);
+  void (*teardown)() = getsym(lib, "plugin_teardown", err);
+  opqst_t (*sym)(opqst_t) = getsym(lib, "handle_thing", err);
+
+  if (*err) {
+    fprintf(stderr, "Unable to find symbol call_in.\n");
+    return;
+  }
+
+  opqst_t st = init(&argc, &argv);
+  for (int i = 0; i < 100000; ++ i) {
+    st = sym(st);
+    printf("stable_ptr: %p\n", st);
+  }
+  teardown();
+}
+
+int main(int argc, char** argv)
+{
+  if (!argv[0] && !argv[1]) {
+    fprintf(stderr, "Missing argument.\n");
+    return 1;
+  }
+
+  int err = 0;
+  dllib_t lib = open_library(argv[1], &err);
+
+  if (err) {
+    return err;
+  }
+
+  use_library(argc, argv, lib, &err);
+  return 0;
+}