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-rw-r--r--Python/thread.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/Python/thread.c b/Python/thread.c
index 1ac2db2..bf207ce 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -8,7 +8,7 @@
#include "Python.h"
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_structseq.h" // _PyStructSequence_FiniBuiltin()
-#include "pycore_pythread.h"
+#include "pycore_pythread.h" // _POSIX_THREADS
#ifndef DONT_HAVE_STDIO_H
# include <stdio.h>
@@ -17,6 +17,26 @@
#include <stdlib.h>
+// Define PY_TIMEOUT_MAX constant.
+#ifdef _POSIX_THREADS
+ // PyThread_acquire_lock_timed() uses _PyTime_FromNanoseconds(us * 1000),
+ // convert microseconds to nanoseconds.
+# define PY_TIMEOUT_MAX_VALUE (LLONG_MAX / 1000)
+#elif defined (NT_THREADS)
+ // WaitForSingleObject() accepts timeout in milliseconds in the range
+ // [0; 0xFFFFFFFE] (DWORD type). INFINITE value (0xFFFFFFFF) means no
+ // timeout. 0xFFFFFFFE milliseconds is around 49.7 days.
+# if 0xFFFFFFFELL < LLONG_MAX / 1000
+# define PY_TIMEOUT_MAX_VALUE (0xFFFFFFFELL * 1000)
+# else
+# define PY_TIMEOUT_MAX_VALUE LLONG_MAX
+# endif
+#else
+# define PY_TIMEOUT_MAX_VALUE LLONG_MAX
+#endif
+const long long PY_TIMEOUT_MAX = PY_TIMEOUT_MAX_VALUE;
+
+
static void PyThread__init_thread(void); /* Forward */
#define initialized _PyRuntime.threads.initialized