Merge windows+cc branch into cairocanvas branch. Not finished, need to now merge...

[ardour.git] / libs / pbd / semutils.cc

diff --git a/libs/pbd/semutils.cc b/libs/pbd/semutils.cc
index 48fdd249f60f9e8879ef1c69a26323ad1dcb0e76..cf7b54d30e2babd036853a29ebc87d2e284e48f1 100644 (file)
--- a/libs/pbd/semutils.cc
+++ b/libs/pbd/semutils.cc
@@ -23,7 +23,12 @@ using namespace PBD;
 
 ProcessSemaphore::ProcessSemaphore (const char* name, int val)
 {
-#ifdef __APPLE__
+#ifdef PLATFORM_WINDOWS
+       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 ();
        }
@@ -45,7 +50,28 @@ ProcessSemaphore::ProcessSemaphore (const char* name, int val)
 
 ProcessSemaphore::~ProcessSemaphore ()
 {
-#ifdef __APPLE__
+#ifdef PLATFORM_WINDOWS
+       CloseHandle(_sem);
+#elif __APPLE__
        sem_close (ptr_to_sem());
 #endif
 }
+
+#ifdef PLATFORM_WINDOWS
+
+int
+ProcessSemaphore::signal ()
+{
+       // non-zero on success, opposite to posix
+       return !ReleaseSemaphore(_sem, 1, NULL);
+}
+
+int
+ProcessSemaphore::wait ()
+{
+       DWORD result = 0;
+       result = WaitForSingleObject(_sem, INFINITE);
+       return (result == WAIT_OBJECT_0);
+}
+
+#endif