diff options
Diffstat (limited to 'winsup/cygwin/cygthread.cc')
| -rw-r--r-- | winsup/cygwin/cygthread.cc | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/winsup/cygwin/cygthread.cc b/winsup/cygwin/cygthread.cc index e5dfcc575..b81c4c16f 100644 --- a/winsup/cygwin/cygthread.cc +++ b/winsup/cygwin/cygthread.cc @@ -19,7 +19,7 @@ static cygthread NO_COPY threads[6]; #define NTHREADS (sizeof (threads) / sizeof (threads[0])) DWORD NO_COPY cygthread::main_thread_id; -bool cygthread::initialized; +bool NO_COPY cygthread::initialized; /* Initial stub called by cygthread constructor. Performs initial per-thread initialization and loops waiting for new thread functions @@ -127,8 +127,9 @@ new (size_t) for (;;) { + bool was_initialized = initialized; /* Search the threads array for an empty slot to use */ - for (info = threads; info < threads + NTHREADS; info++) + for (info = threads + NTHREADS - 1; info >= threads; info--) if ((id = (DWORD) InterlockedExchange ((LPLONG) &info->avail, 0))) { info->id = id; @@ -139,10 +140,17 @@ new (size_t) return info; } - if (!initialized) - Sleep (0); /* thread_runner is not be finished yet. */ + if (!was_initialized) + Sleep (0); /* thread_runner is not finished yet. */ else - return freerange (); + { +#ifdef DEBUGGING + char buf[1024]; + if (GetEnvironmentVariable ("CYGWIN_NOFREERANGE", buf, sizeof (buf))) + api_fatal ("Overflowed cygwin thread pool"); +#endif + return freerange (); + } } } |