PolarSSL: WIN32 threading support for entropy

Added WIN32 threading support for PolarSSL entropy if
--enable-threaded-resolver config flag is set and process.h can be found.

2 files changed, 45 insertions, 8 deletions

diff --git a/lib/polarssl.c b/lib/polarssl.c
index db1380e20..5ebccc080 100644
--- a/lib/polarssl.c
+++ b/lib/polarssl.c
@@ -68,10 +68,10 @@
 #include "rawstr.h"
 
 /* apply threading? */
-#if defined(USE_THREADS_POSIX)
+#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
 #define THREADING_SUPPORT
 #include "polarsslthreadlock.h"
-#endif /* USE_THREADS_POSIX */
+#endif /* USE_THREADS_POSIX || USE_THREADS_WIN32 */
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
diff --git a/lib/polarsslthreadlock.c b/lib/polarsslthreadlock.c
index fc9c11f88..c8a3832e3 100755
--- a/lib/polarsslthreadlock.c
+++ b/lib/polarsslthreadlock.c
@@ -24,13 +24,18 @@
 #include <stdio.h>
 #include "curl_setup.h"
 
-#ifdef USE_POLARSSL
+#if defined(USE_POLARSSL) && (defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32))
 
 #if defined(USE_THREADS_POSIX)
 #ifdef HAVE_PTHREAD_H
 #include <pthread.h>
 #define MUTEX_TYPE       pthread_mutex_t
 #endif /* HAVE_PTHREAD_H */
+#elif defined(USE_THREADS_WIN32)
+#ifdef HAVE_PROCESS_H
+#include <process.h>
+#define MUTEX_TYPE       HANDLE
+#endif /* HAVE_PROCESS_H */
 #endif /* USE_THREADS_POSIX */
 
 #include "polarsslthreadlock.h"
@@ -57,6 +62,13 @@ int polarsslthreadlock_thread_setup(void)
 	if(ret)
 	   return 0; /* pthread_mutex_init failed */
   }
+#elif defined(HAVE_PROCESS_H)
+  for (i = 0;  i < NUMT;  i++)
+  {
+    mutex_buf[i] = CreateMutex(0, FALSE, 0);
+	if(mutex_buf[i] == 0)
+	  return 0;  /* CreateMutex failed */
+  }	
 #endif /* HAVE_PTHREAD_H */
 
   return 1; /* OK */
@@ -75,8 +87,13 @@ int polarsslthreadlock_thread_cleanup(void)
   {
     ret = pthread_mutex_destroy(&mutex_buf[i]);
 	if(ret)
-	   return 0; /* pthread_mutex_destroy failed */
-  } 
+	  return 0; /* pthread_mutex_destroy failed */
+  }
+#elif defined(HAVE_PROCESS_H)
+  for (i = 0; i < NUMT; i++)
+    ret = CloseHandle(mutex_buf[i]);
+    if(!ret)
+	  return 0; /* CloseHandle failed */	
 #endif /* HAVE_PTHREAD_H */
   free(mutex_buf);
   mutex_buf = NULL;
@@ -93,10 +110,20 @@ int polarsslthreadlock_lock_function(int n)
     ret = pthread_mutex_lock(&mutex_buf[n]);
 	if(ret)
 	{
-	  DEBUGF(fprintf(stderr, "Error: pthread_mutex_lock failed\n"));
+	  DEBUGF(fprintf(stderr, "Error: polarsslthreadlock_lock_function failed\n"));
 	  return 0; /* pthread_mutex_lock failed */
 	}
-  } 
+  }
+#elif defined(HAVE_PROCESS_H)
+  if(n < NUMT)
+  {
+    ret = (WaitForSingleObject(mutex_buf[n], INFINITE)==WAIT_FAILED?1:0);
+	if(ret)
+	{
+	  DEBUGF(fprintf(stderr, "Error: polarsslthreadlock_lock_function failed\n"));
+	  return 0; /* pthread_mutex_lock failed */
+	}
+  }	
 #endif /* HAVE_PTHREAD_H */
   return 1; /* OK */
 }
@@ -110,10 +137,20 @@ int polarsslthreadlock_unlock_function(int n)
     ret = pthread_mutex_unlock(&mutex_buf[n]);
 	if(ret)
 	{
-	  DEBUGF(fprintf(stderr, "Error: pthread_mutex_unlock failed\n"));
+	  DEBUGF(fprintf(stderr, "Error: polarsslthreadlock_unlock_function failed\n"));
 	  return 0; /* pthread_mutex_unlock failed */
 	}
   }
+#elif defined(HAVE_PROCESS_H)
+  if(n < NUMT)
+  {
+    ret = ReleaseMutex(mutex_buf[n]);
+	if(!ret)
+	{
+	  DEBUGF(fprintf(stderr, "Error: polarsslthreadlock_unlock_function failed\n"));
+	  return 0; /* pthread_mutex_lock failed */
+	}
+  }
 #endif /* HAVE_PTHREAD_H */
   return 1; /* OK */
 }