Changeset 19058 for trunk/psLib/src/fft/psFFT.c

Timestamp:

Aug 13, 2008, 5:23:13 PM (18 years ago)

Author:

Paul Price

Message:

Learned that of all the fftw_ calls, only fftw_execute is thread-safe: all other calls have to be wrapped in a mutex for thread safety.

File:

• trunk/psLib/src/fft/psFFT.c (modified) (1 diff)

trunk/psLib/src/fft/psFFT.c

@@ -4 +4 @@
 
 #include <fftw3.h>
+#include <pthread.h>
 
 #include "psAssert.h"
 #include "psLogMsg.h"
 #include "psFFT.h"
+
+static pthread_mutex_t fftwLock = PTHREAD_MUTEX_INITIALIZER; // Lock for FFTW
+
+void psFFTLock(void)
+{
+    pthread_mutex_lock(&fftwLock);
+}
+
+void psFFTUnlock(void)
+{
+    pthread_mutex_unlock(&fftwLock);
+}
 
 bool psFFTThreads(int threads)