X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=libs%2Fpbd%2Fsemutils.cc;h=7f31d30fafca5d5d8c32629bb1695b089c99468e;hb=c80e8727dffd2a0958ae377aff5f0e7e2904770f;hp=48fdd249f60f9e8879ef1c69a26323ad1dcb0e76;hpb=1676789907b95aa8d5bf6cc2ce62aa66a80b9aae;p=ardour.git

diff --git a/libs/pbd/semutils.cc b/libs/pbd/semutils.cc
index 48fdd249f6..7f31d30faf 100644
--- a/libs/pbd/semutils.cc
+++ b/libs/pbd/semutils.cc
@@ -21,15 +21,20 @@
 
 using namespace PBD;
 
-ProcessSemaphore::ProcessSemaphore (const char* name, int val)
+Semaphore::Semaphore (const char* name, int val)
 {
-#ifdef __APPLE__
+#ifdef WINDOWS_SEMAPHORE
+	if ((_sem = CreateSemaphore(NULL, val, 32767, name)) == NULL) {
+		throw failed_constructor ();
+	}
+
+#elif __APPLE__
 	if ((_sem = sem_open (name, O_CREAT, 0600, val)) == (sem_t*) SEM_FAILED) {
 		throw failed_constructor ();
 	}
 
 	/* this semaphore does not exist for IPC */
-	
+
 	if (sem_unlink (name)) {
 		throw failed_constructor ();
 	}
@@ -43,9 +48,30 @@ ProcessSemaphore::ProcessSemaphore (const char* name, int val)
 #endif
 }
 
-ProcessSemaphore::~ProcessSemaphore ()
+Semaphore::~Semaphore ()
 {
-#ifdef __APPLE__
+#ifdef WINDOWS_SEMAPHORE
+	CloseHandle(_sem);
+#elif __APPLE__
 	sem_close (ptr_to_sem());
 #endif
 }
+
+#ifdef WINDOWS_SEMAPHORE
+
+int
+Semaphore::signal ()
+{
+	// non-zero on success, opposite to posix
+	return !ReleaseSemaphore(_sem, 1, NULL);
+}
+
+int
+Semaphore::wait ()
+{
+	DWORD result = 0;
+	result = WaitForSingleObject(_sem, INFINITE);
+	return (result == WAIT_OBJECT_0);
+}
+
+#endif