Problem - Kevin Tafuro

#define SPC_ACQUIRE_MUTEX(mtx) pthread_mutex_lock(&(mtx))
#define SPC_RELEASE_MUTEX(mtx) pthread_mutex_unlock(&(mtx))
#define SPC_CREATE_COND(cond) (!pthread_cond_init(&(cond), 0))
#define SPC_DESTROY_COND(cond) pthread_cond_destroy(&(cond))
#define SPC_SIGNAL_COND(cond) pthread_cond_signal(&(cond))
#define SPC_BROADCAST_COND(cond) pthread_cond_broadcast(&(cond))
#define SPC_WAIT_COND(cond, mtx) pthread_cond_wait(&(cond), &(mtx))
#define SPC_CLEANUP_PUSH(func, arg) pthread_cleanup_push(func, arg)
#define SPC_CLEANUP_POP(exec) pthread_cleanup_pop(exec)
#define closesocket(sock) close((sock))
#define SOCKET_ERROR -1
#else
#define SPC_ACQUIRE_MUTEX(mtx) WaitForSingleObjectEx((mtx), INFINITE, FALSE)
#define SPC_RELEASE_MUTEX(mtx) ReleaseMutex((mtx))
#define SPC_CREATE_COND(cond) ((cond) = CreateEvent(0, TRUE, FALSE, 0))
#define SPC_DESTROY_COND(cond) CloseHandle((cond))
#define SPC_SIGNAL_COND(cond) SetEvent((cond))
#define SPC_BROADCAST_COND(cond) PulseEvent((cond))
#define SPC_WAIT_COND(cond, mtx) spc_win32_wait_cond((cond), (mtx))
#define SPC_CLEANUP_PUSH(func, arg) { void (*__spc_func)(void *) = func; \
void *__spc_arg = arg;
#define SPC_CLEANUP_POP(exec) if ((exec)) __spc_func(__spc_arg); } \
do { } while (0)
#endif
static int socketpool_used = 0;
static int socketpool_limit = 0;
#ifndef WIN32
static pthread_cond_t socketpool_cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t socketpool_mutex = PTHREAD_MUTEX_INITIALIZER;
#else
static HANDLE socketpool_cond, socketpool_mutex;
#endif
#ifdef WIN32
static void spc_win32_wait_cond(HANDLE cond, HANDLE mutex) {
HANDLE handles[2];
handles[0] = cond;
handles[1] = mutex;
ResetEvent(cond);
ReleaseMutex(mutex);
WaitForMultipleObjectsEx(2, handles, TRUE, INFINITE, FALSE);
}
#endif
int spc_socketpool_init(void) {
#ifdef WIN32
if (!SPC_CREATE_COND(socketpool_cond)) return 0;
if (!(socketpool_mutex = CreateMutex(0, FALSE, 0))) {
CloseHandle(socketpool_cond);
return 0;
}
Guarding Against Creating Too Many Network Sockets | 725
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