78 lines
1.8 KiB
Text
78 lines
1.8 KiB
Text
backport of https://github.com/apple/swift-corelibs-libdispatch/pull/559
|
|
|
|
Index: tests/dispatch_workqueue.c
|
|
--- tests/dispatch_workqueue.c.orig
|
|
+++ tests/dispatch_workqueue.c
|
|
@@ -0,0 +1,72 @@
|
|
+#include <bsdtests.h>
|
|
+#include "dispatch_test.h"
|
|
+
|
|
+struct test_context {
|
|
+ uint32_t ncpu;
|
|
+ int flag;
|
|
+};
|
|
+
|
|
+static void
|
|
+timeout(void *context)
|
|
+{
|
|
+ struct test_context *ctx = (struct test_context *)context;
|
|
+ sleep(2); // Give the monitor the best chance of firing.
|
|
+ test_int32_format(ctx->flag, 1, "flag");
|
|
+ test_stop();
|
|
+}
|
|
+
|
|
+static void
|
|
+raise_flag(void *context)
|
|
+{
|
|
+ struct test_context *ctx = (struct test_context *)context;
|
|
+ ctx->flag++;
|
|
+}
|
|
+
|
|
+static void
|
|
+spin(void *context)
|
|
+{
|
|
+ struct test_context *ctx = (struct test_context *)context;
|
|
+ sleep(ctx->ncpu * 2);
|
|
+}
|
|
+
|
|
+static uint32_t
|
|
+activecpu(void)
|
|
+{
|
|
+ uint32_t activecpu;
|
|
+#if defined(__linux__) || defined(__OpenBSD__)
|
|
+ activecpu = (uint32_t)sysconf(_SC_NPROCESSORS_ONLN);
|
|
+#elif defined(_WIN32)
|
|
+ SYSTEM_INFO si;
|
|
+ GetSystemInfo(&si);
|
|
+ activecpu = si.dwNumberOfProcessors;
|
|
+#else
|
|
+ size_t s = sizeof(activecpu);
|
|
+ sysctlbyname("hw.activecpu", &activecpu, &s, NULL, 0);
|
|
+#endif
|
|
+ return activecpu;
|
|
+}
|
|
+
|
|
+int
|
|
+main(void)
|
|
+{
|
|
+ uint32_t ncpu = activecpu();
|
|
+
|
|
+ dispatch_test_start("Dispatch workqueue");
|
|
+
|
|
+ dispatch_queue_t global = dispatch_get_global_queue(0, 0);
|
|
+ test_ptr_notnull("dispatch_get_global_queue", global);
|
|
+
|
|
+ struct test_context ctx = {ncpu, 0};
|
|
+ dispatch_async_f(global, &ctx, timeout);
|
|
+
|
|
+ for(int i = 0; i < (int)ncpu - 1; i++) {
|
|
+ dispatch_async_f(global, &ctx, spin);
|
|
+ }
|
|
+
|
|
+ // All cpus are tied up at this point. Workqueue
|
|
+ // should execute this function by overcommit.
|
|
+ dispatch_async_f(global, &ctx, raise_flag);
|
|
+
|
|
+ dispatch_main();
|
|
+ return 0;
|
|
+}
|