#include <darwintest.h>
#include <dispatch/dispatch.h>
#include <inttypes.h>
-#include <ktrace.h>
-#include <ktrace_private.h>
+#include <ktrace/session.h>
+#include <ktrace/private.h>
#include <mach/dyld_kernel.h>
#include <mach/host_info.h>
#include <mach/mach.h>
#include <sys/kdebug_signpost.h>
#include <sys/sysctl.h>
-#define KTRACE_WAIT_TIMEOUT_S (10)
+#define KDBG_TEST_MACROS 1
+#define KDBG_TEST_OLD_TIMES 2
+
+static void
+assert_kdebug_test(unsigned int flavor)
+{
+ size_t size = flavor;
+ int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDTEST };
+ T_ASSERT_POSIX_SUCCESS(
+ sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &size, NULL, 0),
+ "KERN_KDTEST sysctl");
+}
+
+#pragma mark kdebug syscalls
#define TRACE_DEBUGID (0xfedfed00U)
T_META_ASROOT(true))
{
ktrace_session_t s;
- dispatch_time_t timeout;
__block int events_seen = 0;
s = ktrace_session_create();
ktrace_session_t s;
__block int single_seen = 0;
__block int paired_seen = 0;
- dispatch_time_t timeout;
s = ktrace_session_create();
T_ASSERT_NOTNULL(s, NULL);
dispatch_main();
}
+#pragma mark kdebug behaviors
+
#define WRAPPING_EVENTS_COUNT (150000)
#define TRACE_ITERATIONS (5000)
#define WRAPPING_EVENTS_THRESHOLD (100)
-T_DECL(kdebug_wrapping,
+T_DECL(wrapping,
"ensure that wrapping traces lost events and no events prior to the wrap",
T_META_ASROOT(true), T_META_CHECK_LEAKS(false))
{
dispatch_main();
}
+T_DECL(reject_old_events,
+ "ensure that kdebug rejects events from before tracing began",
+ T_META_ASROOT(true), T_META_CHECK_LEAKS(false))
+{
+ __block uint64_t event_horizon_ts;
+ __block int events = 0;
+
+ ktrace_session_t s = ktrace_session_create();
+ T_QUIET; T_ASSERT_NOTNULL(s, "ktrace_session_create");
+
+ ktrace_events_range(s, KDBG_EVENTID(DBG_BSD, DBG_BSD_KDEBUG_TEST, 0),
+ KDBG_EVENTID(DBG_BSD + 1, 0, 0),
+ ^(struct trace_point *tp)
+ {
+ events++;
+ T_EXPECT_GT(tp->timestamp, event_horizon_ts,
+ "events in trace should be from after tracing began");
+ });
+
+ ktrace_set_completion_handler(s, ^{
+ T_EXPECT_EQ(events, 2, "should see only two events");
+ ktrace_session_destroy(s);
+ T_END;
+ });
+
+ event_horizon_ts = mach_absolute_time();
+
+ T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL);
+ /* first, try an old event at the beginning of trace */
+ assert_kdebug_test(KDBG_TEST_OLD_TIMES);
+ /* after a good event has been traced, old events should be rejected */
+ assert_kdebug_test(KDBG_TEST_OLD_TIMES);
+ ktrace_end(s, 0);
+
+ dispatch_main();
+}
+
+#define ORDERING_TIMEOUT_SEC 5
+
+T_DECL(ascending_time_order,
+ "ensure that kdebug events are in ascending order based on time",
+ T_META_ASROOT(true), T_META_CHECK_LEAKS(false))
+{
+ __block uint64_t prev_ts = 0;
+ __block uint32_t prev_debugid = 0;
+ __block unsigned int prev_cpu = 0;
+ __block bool in_order = true;
+
+ ktrace_session_t s = ktrace_session_create();
+ T_QUIET; T_ASSERT_NOTNULL(s, "ktrace_session_create");
+
+ ktrace_events_all(s, ^(struct trace_point *tp) {
+ if (tp->timestamp < prev_ts) {
+ in_order = false;
+ T_FAIL("found timestamps out of order");
+ T_LOG("%" PRIu64 ": %#" PRIx32 " (cpu %d)",
+ prev_ts, prev_debugid, prev_cpu);
+ T_LOG("%" PRIu64 ": %#" PRIx32 " (cpu %d)",
+ tp->timestamp, tp->debugid, tp->cpuid);
+ }
+ });
+
+ ktrace_set_completion_handler(s, ^{
+ ktrace_session_destroy(s);
+ T_EXPECT_TRUE(in_order, "event timestamps were in-order");
+ T_END;
+ });
+
+ T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL);
+
+ /* try to inject old timestamps into trace */
+ assert_kdebug_test(KDBG_TEST_OLD_TIMES);
+
+ dispatch_after(dispatch_time(DISPATCH_TIME_NOW, ORDERING_TIMEOUT_SEC * NSEC_PER_SEC),
+ dispatch_get_main_queue(), ^{
+ T_LOG("ending test after timeout");
+ ktrace_end(s, 1);
+ });
+
+ dispatch_main();
+
+}
+
+#pragma mark dyld tracing
+
__attribute__((aligned(8)))
static const char map_uuid[16] = "map UUID";
dispatch_main();
}
+#pragma mark kdebug kernel macros
+
#define EXP_KERNEL_EVENTS 5U
static const uint32_t dev_evts[EXP_KERNEL_EVENTS] = {
return is_development;
}
-static void
-assert_kdebug_test(void)
-{
- int mib[] = { CTL_KERN, KERN_KDEBUG, KERN_KDTEST };
- T_ASSERT_POSIX_SUCCESS(
- sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, NULL, NULL, 0),
- "KERN_KDTEST");
-}
-
static void
expect_event(struct trace_point *tp, unsigned int *events,
const uint32_t *event_ids, size_t event_ids_len)
* Development-only events are only filtered if running on an embedded
* OS.
*/
- unsigned dev_exp;
+ unsigned int dev_exp;
+#if TARGET_OS_EMBEDDED
+ dev_exp = is_development_kernel() ? EXP_KERNEL_EVENTS : 0U;
+#else
dev_exp = EXP_KERNEL_EVENTS;
+#endif
T_EXPECT_EQ(rel_seen, EXP_KERNEL_EVENTS,
"release and development events seen");
T_EXPECT_EQ(dev_seen, dev_exp, "development-only events seen/not seen");
- T_EXPECT_EQ(filt_seen, EXP_KERNEL_EVENTS, "filter-only events seen");
+ T_EXPECT_EQ(filt_seen, dev_exp, "filter-only events seen");
ktrace_session_destroy(s);
T_END;
});
ktrace_filter_pid(s, getpid());
T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL);
- assert_kdebug_test();
+ assert_kdebug_test(KDBG_TEST_MACROS);
ktrace_end(s, 0);
ktrace_session_destroy(s);
T_EXPECT_EQ(rel_seen, EXP_KERNEL_EVENTS, NULL);
+#if defined(__arm__) || defined(__arm64__)
+ T_EXPECT_EQ(dev_seen, is_development_kernel() ? EXP_KERNEL_EVENTS : 0U,
+ NULL);
+#else
T_EXPECT_EQ(dev_seen, EXP_KERNEL_EVENTS, NULL);
+#endif /* defined(__arm__) || defined(__arm64__) */
T_EXPECT_EQ(filt_seen, 0U, NULL);
T_END;
});
T_ASSERT_POSIX_ZERO(ktrace_start(s, dispatch_get_main_queue()), NULL);
- assert_kdebug_test();
+ assert_kdebug_test(KDBG_TEST_MACROS);
ktrace_end(s, 0);
dispatch_main();
}
-
projects / apple / xnu.git / blobdiff