[thread] Stack size

3 files changed, 39 insertions, 7 deletions

diff --git a/source/kit/threads.h b/source/kit/threads.h
index 584ac7c..197f34f 100644
--- a/source/kit/threads.h
+++ b/source/kit/threads.h
@@ -39,6 +39,7 @@
 
 #  include <errno.h>
 #  include <limits.h>
+#  include <stddef.h>
 #  include <stdlib.h>
 
 #  ifdef _MSC_VER
@@ -150,7 +151,8 @@ enum {
   thrd_timedout,    // timed out
   thrd_error,       // failed
   thrd_busy,        // resource busy
-  thrd_nomem        // out of memory
+  thrd_nomem,       // out of memory,
+  thrd_wrong_stack_size
 };
 
 /*-------------------------- functions --------------------------*/
@@ -171,6 +173,8 @@ int    mtx_timedlock(mtx_t *__restrict mtx_,
 int    mtx_trylock(mtx_t *mtx_);
 int    mtx_unlock(mtx_t *mtx_);
 int    thrd_create(thrd_t *, thrd_start_t, void *);
+int    thrd_create_with_stack(thrd_t *, thrd_start_t, void *,
+                              ptrdiff_t stack_size);
 thrd_t thrd_current(void);
 int    thrd_detach(thrd_t);
 int    thrd_equal(thrd_t, thrd_t);
diff --git a/source/kit/threads.posix.c b/source/kit/threads.posix.c
index 9628bc7..66610ae 100644
--- a/source/kit/threads.posix.c
+++ b/source/kit/threads.posix.c
@@ -231,24 +231,45 @@ int mtx_unlock(mtx_t *mtx) {
 
 /*------------------- 7.25.5 Thread functions -------------------*/
 // 7.25.5.1
-int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
+int thrd_create_with_stack(thrd_t *thr, thrd_start_t func, void *arg,
+                           ptrdiff_t const stack_size) {
   impl_thrd_param_t *pack;
   assert(thr != NULL);
+  assert(stack_size == 0 || stack_size >= PTHREAD_STACK_MIN);
+  pthread_attr_t  attr;
+  pthread_attr_t *attr_p = NULL;
+  if (stack_size > 0) {
+    if (pthread_attr_init(&attr) != 0)
+      return thrd_nomem;
+    if (pthread_attr_setstacksize(&attr, (size_t) stack_size) != 0)
+      return thrd_wrong_stack_size;
+    attr_p = &attr;
+  }
   kit_allocator_t alloc = kit_alloc_default();
   pack                  = (impl_thrd_param_t *) alloc.allocate(
       alloc.state, sizeof(impl_thrd_param_t));
-  if (!pack)
+  if (!pack) {
+    if (attr_p)
+      pthread_attr_destroy(attr_p);
     return thrd_nomem;
+  }
   pack->func  = func;
   pack->arg   = arg;
   pack->alloc = alloc;
-  if (pthread_create(thr, NULL, impl_thrd_routine, pack) != 0) {
+  if (pthread_create(thr, attr_p, impl_thrd_routine, pack) != 0) {
     alloc.deallocate(alloc.state, pack);
+    if (attr_p)
+      pthread_attr_destroy(attr_p);
     return thrd_error;
   }
+  if (attr_p)
+    pthread_attr_destroy(attr_p);
   return thrd_success;
 }
 
+int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
+  return thrd_create_with_stack(thr, func, arg, 0);
+}
 // 7.25.5.2
 thrd_t thrd_current(void) {
   return pthread_self();
diff --git a/source/kit/threads.win32.c b/source/kit/threads.win32.c
index ce77fab..910ee82 100644
--- a/source/kit/threads.win32.c
+++ b/source/kit/threads.win32.c
@@ -322,10 +322,12 @@ void __threads_win32_tls_callback(void) {
 
 /*------------------- 7.25.5 Thread functions -------------------*/
 // 7.25.5.1
-int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
+int thrd_create_with_stack(thrd_t *thr, thrd_start_t func, void *arg,
+                           ptrdiff_t const stack_size) {
   impl_thrd_param_t *pack;
   uintptr_t          handle;
   assert(thr != NULL);
+  assert(stack_size >= 0 && stack_size < 0x100000000);
   kit_allocator_t alloc = kit_alloc_default();
   pack                  = (impl_thrd_param_t *) alloc.allocate(
       alloc.state, (sizeof(impl_thrd_param_t)));
@@ -334,8 +336,9 @@ int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
   pack->func  = func;
   pack->arg   = arg;
   pack->alloc = alloc;
-  handle      = _beginthreadex(NULL, 0, impl_thrd_routine, pack,
-                               CREATE_SUSPENDED, NULL);
+  handle      = _beginthreadex(NULL, (unsigned) stack_size,
+                               impl_thrd_routine, pack, CREATE_SUSPENDED,
+                               NULL);
   if (handle == 0) {
     alloc.deallocate(alloc.state, pack);
     if (errno == EAGAIN || errno == EACCES)
@@ -348,6 +351,10 @@ int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
   return thrd_success;
 }
 
+int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
+  return thrd_create_with_stack(thr, func, arg);
+}
+
 // 7.25.5.2
 thrd_t thrd_current(void) {
   /* GetCurrentThread() returns a pseudo-handle, which we need