Patch #1454481: Make thread stack size runtime tunable.
diff --git a/Python/thread_os2.h b/Python/thread_os2.h
index a18ce6f..91959a0 100644
--- a/Python/thread_os2.h
+++ b/Python/thread_os2.h
@@ -14,10 +14,13 @@
long PyThread_get_thread_ident(void);
#endif
+/* default thread stack size of 64kB */
#if !defined(THREAD_STACK_SIZE)
#define THREAD_STACK_SIZE 0x10000
#endif
+#define OS2_STACKSIZE(x) (x ? x : THREAD_STACK_SIZE)
+
/*
* Initialization of the C package, should not be needed.
*/
@@ -35,7 +38,10 @@
int aThread;
int success = 0;
- aThread = _beginthread(func, NULL, THREAD_STACK_SIZE, arg);
+ aThread = _beginthread(func,
+ NULL,
+ OS2_STACKSIZE(_pythread_stacksize),
+ arg);
if (aThread == -1) {
success = -1;
@@ -274,3 +280,37 @@
DosExitCritSec();
#endif
}
+
+/* minimum/maximum thread stack sizes supported */
+#define THREAD_MIN_STACKSIZE 0x8000 /* 32kB */
+#define THREAD_MAX_STACKSIZE 0x2000000 /* 32MB */
+
+/* set the thread stack size.
+ * Return 1 if an exception is pending, 0 otherwise.
+ */
+static int
+_pythread_os2_set_stacksize(size_t size)
+{
+ /* set to default */
+ if (size == 0) {
+ _pythread_stacksize = 0;
+ return 0;
+ }
+
+ /* valid range? */
+ if (size >= THREAD_MIN_STACKSIZE && size < THREAD_MAX_STACKSIZE) {
+ _pythread_stacksize = size;
+ return 0;
+ }
+ else {
+ char warning[128];
+ snprintf(warning,
+ 128,
+ "thread stack size of %#x bytes not supported on OS/2",
+ size);
+ return PyErr_Warn(PyExc_RuntimeWarning, warning);
+ }
+}
+
+#undef THREAD_SET_STACKSIZE
+#define THREAD_SET_STACKSIZE(x) _pythread_os2_set_stacksize(x)