[wip] plugin stuff

6 files changed, 43 insertions, 8 deletions

diff --git a/connection.h b/include/connection.h
index 416e076..416e076 100644
--- a/connection.h
+++ b/include/connection.h
diff --git a/pipeline.h b/include/pipeline.h
index c0feb56..d662b09 100644
--- a/pipeline.h
+++ b/include/pipeline.h
@@ -24,8 +24,15 @@ struct ptx_pipeline_stage_funcs {
   ptx_pipeline_cleanup_proc_t *cleanup;
 };
 
+#ifdef MODULE
+#define MODEXP extern
+#else
+#define MODEXP \
+__attribute__((visibility("protected")))
+#endif
+
 /* allocates a new pipeline, with space for `initial_size' new stages. */
-ptx_pipeline_t *ptx_pipeline_new(size_t initial_size) ATTR_WUR ATTR_MALLOC() ATTR_MALLOC((ptx_pipeline_free, 1));
+MODEXP ptx_pipeline_t *ptx_pipeline_new(size_t initial_size) ATTR_WUR ATTR_MALLOC() ATTR_MALLOC((ptx_pipeline_free, 1));
 
 /* frees an existing pipeline stage. note that this will call the cleanup function in the stages as well. */
 void ptx_pipeline_free(ptx_pipeline_t *pl);
diff --git a/main.c b/main.c
index 111424c..273d797 100644
--- a/main.c
+++ b/main.c
@@ -2,17 +2,18 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdarg.h>
+#include <dlfcn.h>
 
 #include "pipeline.h"
 
 #define UNUSED(_v) ((void)(_v))
 
-PIPELINE_STAGE int identity_stage_handle(const ptx_pipeline_ctx_t *ctx, const void *data, size_t sz)
+PIPELINE_STAGE static int identity_stage_handle(const ptx_pipeline_ctx_t *ctx, const void *data, size_t sz)
 {
   return ptx_pipeline_ctx_next(ctx, data, sz);
 }
 
-PIPELINE_INIT int debug_stage_init(const char *name, void **ppuser, va_list init_args)
+PIPELINE_INIT static int debug_stage_init(const char *name, void **ppuser, va_list init_args)
 {
   static const char *const messages[] = { "no continue :(", "continue :)" };
 
@@ -26,12 +27,12 @@ PIPELINE_INIT int debug_stage_init(const char *name, void **ppuser, va_list init
   return 0;
 }
 
-PIPELINE_CLEANUP void debug_stage_cleanup(const char *name, void *puser)
+PIPELINE_CLEANUP static void debug_stage_cleanup(const char *name, void *puser)
 {
   printf("Debug stage %s (cleanup): %p\n", name, puser);
 }
 
-PIPELINE_STAGE int debug_stage_handle(const ptx_pipeline_ctx_t *ctx, const void *data, size_t sz)
+PIPELINE_STAGE static int debug_stage_handle(const ptx_pipeline_ctx_t *ctx, const void *data, size_t sz)
 {
   bool cont = !!(uintptr_t)(*ptx_pipeline_ctx_get_user(ctx));
   printf("Debug stage %s:\n Data: %p\n Size: %zu\n", ptx_pipeline_ctx_get_name(ctx), data, sz);
@@ -121,5 +122,19 @@ int main(void) {
 
   ptx_pipeline_free(pl);
 
+  void *mod;
+  if (!(mod = dlopen("plugins/libm_skibidi.so", RTLD_LAZY | RTLD_LOCAL))) {
+    printf("dlopen: %s\n", dlerror());
+    return 1;
+  }
+
+  int (*f)(void) = dlsym(mod, "do_something");
+  if (!f) {
+    printf("dlsym: %s\n", dlerror());
+    return 1;
+  }
+
+  printf("f: %d\n", f());
+
   return 0;
 }
diff --git a/meson.build b/meson.build
index da4fe0e..03d51a4 100644
--- a/meson.build
+++ b/meson.build
@@ -1,4 +1,5 @@
 project('ptxmc', 'c', default_options : ['c_std=c11'])
+add_project_arguments('-D_XOPEN_SOURCE=700', language : [ 'c' ])
 
 c_comp = meson.get_compiler('c')
 
@@ -11,10 +12,13 @@ conf_data.set('HAS_RESTRICT', c_comp.has_type('int *restrict'))
 configure_file(input : 'config.h.in', output : 'config.h', configuration : conf_data)
 
 conf_include = include_directories('.')
+src_include = include_directories('include')
 
 executable('ptxmc',
-  'main.c',
   'pipeline.c',
   'connection.c',
-  include_directories : conf_include,
-  c_args : [ '-D_XOPEN_SOURCE=700' ])
+  'main.c',
+  include_directories : [ conf_include, src_include ],
+  link_args : [ '-rdynamic' ])
+
+subdir('plugins')
diff --git a/plugins/meson.build b/plugins/meson.build
new file mode 100644
index 0000000..efa8e5d
--- /dev/null
+++ b/plugins/meson.build
@@ -0,0 +1,2 @@
+shared_library('m_skibidi', 'skibidi.c',
+  include_directories : [ conf_include, src_include ])
diff --git a/plugins/skibidi.c b/plugins/skibidi.c
new file mode 100644
index 0000000..4fa4c33
--- /dev/null
+++ b/plugins/skibidi.c
@@ -0,0 +1,7 @@
+#define MODULE 1
+#include "pipeline.h"
+
+__attribute__((visibility("default"))) int do_something(void)
+{
+  return !!ptx_pipeline_new(4);
+}