Initial commit

win32/Semaphore.c

@@ -0,0 +1,55 @@
+#include "Internal.h"
+#include "Codemap.h"
+#include <stdlib.h>
+
+CgeSemaphore *CgeSemaphoreNew(int value, int *result) {
+    CgeSemaphore *semaphore;
+    int code = CGE_THREAD_EOOM;
+
+    semaphore = malloc(sizeof(*semaphore));
+    if (semaphore) {
+        semaphore->handle = CreateSemaphore(NULL, value, 0x7FFF, NULL);
+        if (!semaphore->handle) {
+            code = errorToErrorCode(GetLastError());
+            free(semaphore);
+            semaphore = NULL;
+        }
+    }
+
+    if (result)
+        *result = code;
+
+    return semaphore;
+}
+
+void CgeSemaphoreFree(CgeSemaphore *semaphore) {
+    if (!semaphore)
+        return;
+    CloseHandle(semaphore->handle);
+    free(semaphore);
+}
+
+int CgeSemaphorePost(CgeSemaphore *semaphore, int *result) {
+    if (!ReleaseSemaphore(semaphore->handle, 1, NULL)) {
+        if (result)
+            *result = errorToErrorCode(GetLastError());
+        return 0;
+    }
+    return 1;
+}
+
+int CgeSemaphoreWait(CgeSemaphore *semaphore, int *result) {
+    return CgeSemaphoreWaitFor(semaphore, INFINITE, result);
+}
+
+int CgeSemaphoreTryWait(CgeSemaphore *semaphore, int *result) {
+    return CgeSemaphoreWaitFor(semaphore, 0, result);
+}
+
+int CgeSemaphoreWaitFor(CgeSemaphore *semaphore, uint32_t timeout, int *result) {
+    switch (WaitForSingleObject(semaphore->handle, timeout)) {
+    case 0: return 1;
+    case WAIT_TIMEOUT: if (result) *result = CGE_THREAD_ETIMEDOUT; return 0;
+    default: if (result) *result = CGE_THREAD_EUNKNOWN; return 0;
+    }
+}