From 31f52a9f9ab5c7090f67cb6a80bac09bbb47dbf2 Mon Sep 17 00:00:00 2001
From: Justin Weiss
Date: Mon, 17 Aug 2020 19:19:21 -0700
Subject: [3DS] Support latest libctru

---
 frontend/3ds/pthread.h | 63 +++++++++++++++++++++++++++++++++-----------------
 1 file changed, 42 insertions(+), 21 deletions(-)

(limited to 'frontend/3ds/pthread.h')

diff --git a/frontend/3ds/pthread.h b/frontend/3ds/pthread.h
index cc3c965..4c58fe5 100644
--- a/frontend/3ds/pthread.h
+++ b/frontend/3ds/pthread.h
@@ -11,20 +11,26 @@
 #define CTR_PTHREAD_STACK_SIZE 0x10000
 #define FALSE 0
 
-typedef int32_t pthread_t;
-typedef int pthread_attr_t;
-
-typedef LightLock pthread_mutex_t;
-typedef int pthread_mutexattr_t;
-
 typedef struct {
   uint32_t semaphore;
   LightLock lock;
   uint32_t waiting;
-} pthread_cond_t;
+} cond_t;
+
+#if !defined(PTHREAD_SCOPE_PROCESS)
+/* An earlier version of devkitARM does not define the pthread types. Can remove in r54+. */
+
+typedef uint32_t pthread_t;
+typedef int pthread_attr_t;
 
+typedef LightLock pthread_mutex_t;
+typedef int pthread_mutexattr_t;
+
+typedef uint32_t pthread_cond_t;
 typedef int pthread_condattr_t;
 
+#endif
+
 static inline int pthread_create(pthread_t *thread,
       const pthread_attr_t *attr, void *(*start_routine)(void*), void *arg)
 {
@@ -80,41 +86,56 @@ static inline int pthread_mutex_destroy(pthread_mutex_t *mutex) {
 }
 
 static inline int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr) {
-  if (svcCreateSemaphore(&cond->semaphore, 0, 1))
+  cond_t *cond_data = calloc(1, sizeof(cond_t));
+  if (!cond_data)
     goto error;
 
-  LightLock_Init(&cond->lock);
-  cond->waiting = 0;
+  if (svcCreateSemaphore(&cond_data->semaphore, 0, 1))
+    goto error;
+
+  LightLock_Init(&cond_data->lock);
+  cond_data->waiting = 0;
+  *cond = cond_data;
   return 0;
 
  error:
-  svcCloseHandle(cond->semaphore);
+  svcCloseHandle(cond_data->semaphore);
+  if (cond_data)
+    free(cond_data);
   return -1;
 }
 
 static inline int pthread_cond_signal(pthread_cond_t *cond) {
   int32_t count;
-  LightLock_Lock(&cond->lock);
-  if (cond->waiting) {
-    cond->waiting--;
-    svcReleaseSemaphore(&count, cond->semaphore, 1);
+  cond_t *cond_data = (cond_t *)*cond;
+  LightLock_Lock(&cond_data->lock);
+  if (cond_data->waiting) {
+    cond_data->waiting--;
+    svcReleaseSemaphore(&count, cond_data->semaphore, 1);
   }
-  LightLock_Unlock(&cond->lock);
+  LightLock_Unlock(&cond_data->lock);
   return 0;
 }
 
 static inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *lock) {
-  LightLock_Lock(&cond->lock);
-  cond->waiting++;
+  cond_t *cond_data = (cond_t *)*cond;
+  LightLock_Lock(&cond_data->lock);
+  cond_data->waiting++;
   LightLock_Unlock(lock);
-  LightLock_Unlock(&cond->lock);
-  svcWaitSynchronization(cond->semaphore, INT64_MAX);
+  LightLock_Unlock(&cond_data->lock);
+  svcWaitSynchronization(cond_data->semaphore, INT64_MAX);
   LightLock_Lock(lock);
   return 0;
 }
 
 static inline int pthread_cond_destroy(pthread_cond_t *cond) {
-  svcCloseHandle(cond->semaphore);
+  if (*cond) {
+    cond_t *cond_data = (cond_t *)*cond;
+
+    svcCloseHandle(cond_data->semaphore);
+    free(*cond);
+  }
+  *cond = 0;
   return 0;
 }
 
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