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authorJeremy Huddleston Sequoia <jeremyhu@apple.com>2016-09-19 01:25:13 -0700
committerJeremy Huddleston Sequoia <jeremyhu@apple.com>2016-09-22 14:55:01 -0700
commit2740dc1937e8ab32b4930f4086c302e6602a7bad (patch)
tree499f950ce063f73498f52648ba05db85b3feaa1f
parent7ff8a74945c0cb525a2d197e28426fd098a407cf (diff)
dix: Silence TSan warnings when checking for pending input
V2: Moves InputCheckPending() into dix.h Bumps required version of xproto to 7.0.30 ================== WARNING: ThreadSanitizer: data race (pid=4943) Read of size 4 at 0x00010c4e3854 by thread T8: #0 WaitForSomething WaitFor.c:237 (X11.bin+0x00010049216c) #1 Dispatch dispatch.c:413 (X11.bin+0x000100352ed9) #2 dix_main main.c:287 (X11.bin+0x00010036e894) #3 server_thread quartzStartup.c:66 (X11.bin+0x000100039e63) Previous write of size 4 at 0x00010c4e3854 by thread T12 (mutexes: write M856, write M1976): #0 mieqEnqueue mieq.c:263 (X11.bin+0x000100448d14) #1 DarwinSendDDXEvent darwinEvents.c:641 (X11.bin+0x000100033613) #2 DarwinProcessFDAdditionQueue_thread darwinEvents.c:338 (X11.bin+0x000100032039) Location is global 'miEventQueue' at 0x00010c4e3850 (X11.bin+0x0001005ab854) Mutex M856 (0x00010c4c8c80) created at: #0 pthread_mutex_lock <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x0000000321fe) #1 DarwinListenOnOpenFD darwinEvents.c:300 (X11.bin+0x000100031607) #2 socket_handoff bundle-main.c:288 (X11.bin+0x000100002b40) #3 __do_request_fd_handoff_socket_block_invoke bundle-main.c:379 (X11.bin+0x0001000029ba) #4 __tsan::invoke_and_release_block(void*) <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x00000005d97b) #5 _dispatch_client_callout <null>:33 (libdispatch.dylib+0x0000000020ef) Mutex M1976 (0x00010c4e3d68) created at: #0 pthread_mutex_init <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x0000000253c3) #1 input_lock inputthread.c:103 (X11.bin+0x00010049fd10) #2 TimerSet WaitFor.c:343 (X11.bin+0x0001004926c2) #3 RootlessQueueRedisplay rootlessScreen.c:594 (X11.bin+0x000100065d7f) #4 RootlessInstallColormap rootlessScreen.c:514 (X11.bin+0x000100069f1a) #5 miSpriteInstallColormap misprite.c:562 (X11.bin+0x000100467095) #6 miCreateDefColormap micmap.c:270 (X11.bin+0x000100440399) #7 DarwinScreenInit darwin.c:285 (X11.bin+0x0001000303bb) #8 AddScreen dispatch.c:3908 (X11.bin+0x00010036c417) #9 InitOutput darwin.c:671 (X11.bin+0x00010002fdeb) #10 dix_main main.c:197 (X11.bin+0x00010036e228) #11 server_thread quartzStartup.c:66 (X11.bin+0x000100039e63) Thread T8 (tid=4198779, running) created by main thread at: #0 pthread_create <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x000000024490) #1 create_thread quartzStartup.c:78 (X11.bin+0x000100039dad) #2 QuartzInitServer quartzStartup.c:95 (X11.bin+0x000100039c16) #3 X11ApplicationMain X11Application.m:1238 (X11.bin+0x00010001cde4) #4 X11ControllerMain X11Controller.m:984 (X11.bin+0x00010002a642) #5 server_main quartzStartup.c:136 (X11.bin+0x00010003a03b) #6 do_start_x11_server bundle-main.c:436 (X11.bin+0x000100002eb5) #7 _Xstart_x11_server mach_startupServer.c:189 (X11.bin+0x000100004e99) #8 mach_startup_server mach_startupServer.c:399 (X11.bin+0x000100005734) #9 mach_msg_server mach_msg.c:563 (libsystem_kernel.dylib+0x000000012186) #10 start <null>:29 (libdyld.dylib+0x000000005254) Thread T12 (tid=4198797, running) created by thread T8 at: #0 pthread_create <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x000000024490) #1 create_thread darwinEvents.c:121 (X11.bin+0x000100031ecf) #2 DarwinEQInit darwinEvents.c:365 (X11.bin+0x000100031860) #3 InitInput darwin.c:571 (X11.bin+0x00010002ea09) #4 dix_main main.c:261 (X11.bin+0x00010036e7ce) #5 server_thread quartzStartup.c:66 (X11.bin+0x000100039e63) SUMMARY: ThreadSanitizer: data race WaitFor.c:237 in WaitForSomething ================== ================== WARNING: ThreadSanitizer: data race (pid=22841) Write of size 4 at 0x000105bbd864 by main thread (mutexes: write M1945): #0 mieqEnqueue mieq.c:263 (X11.bin+0x000100448cf4) #1 DarwinSendDDXEvent darwinEvents.c:642 (X11.bin+0x000100033693) #2 -[X11Controller set_window_menu:] X11Controller.m:275 (X11.bin+0x0001000222fd) #3 -[X11Application set_window_menu:] X11Application.m:486 (X11.bin+0x000100018b44) #4 -[X11Application handleMachMessage:] X11Application.m:177 (X11.bin+0x000100016678) #5 __NSFireMachPort <null>:69 (Foundation+0x00000009b62b) #6 X11ControllerMain X11Controller.m:984 (X11.bin+0x00010002a5f2) #7 server_main quartzStartup.c:136 (X11.bin+0x000100039ffb) #8 do_start_x11_server bundle-main.c:436 (X11.bin+0x000100002e65) #9 _Xstart_x11_server mach_startupServer.c:189 (X11.bin+0x000100004e49) #10 mach_startup_server mach_startupServer.c:399 (X11.bin+0x0001000056e4) #11 mach_msg_server mach_msg.c:563 (libsystem_kernel.dylib+0x000000012186) #12 start <null>:29 (libdyld.dylib+0x000000005254) Previous read of size 4 at 0x000105bbd864 by thread T7: #0 Dispatch dispatch.c:434 (X11.bin+0x000100352fc8) #1 dix_main main.c:287 (X11.bin+0x00010036e874) #2 server_thread quartzStartup.c:66 (X11.bin+0x000100039e23) Location is global 'miEventQueue' at 0x000105bbd860 (X11.bin+0x0001005ab864) Mutex M1945 (0x000105bbdd78) created at: #0 pthread_mutex_init <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x0000000253c3) #1 input_lock inputthread.c:103 (X11.bin+0x00010049fd10) #2 TimerSet WaitFor.c:348 (X11.bin+0x0001004926c2) #3 RootlessQueueRedisplay rootlessScreen.c:594 (X11.bin+0x000100065d3f) #4 RootlessInstallColormap rootlessScreen.c:514 (X11.bin+0x000100069eda) #5 miSpriteInstallColormap misprite.c:562 (X11.bin+0x000100467075) #6 miCreateDefColormap micmap.c:270 (X11.bin+0x000100440379) #7 DarwinScreenInit darwin.c:285 (X11.bin+0x00010003036b) #8 AddScreen dispatch.c:3914 (X11.bin+0x00010036c3f7) #9 InitOutput darwin.c:671 (X11.bin+0x00010002fd9b) #10 dix_main main.c:197 (X11.bin+0x00010036e208) #11 server_thread quartzStartup.c:66 (X11.bin+0x000100039e23) Thread T7 (tid=4257217, running) created by main thread at: #0 pthread_create <null>:144 (libclang_rt.tsan_osx_dynamic.dylib+0x000000024490) #1 create_thread quartzStartup.c:78 (X11.bin+0x000100039d6d) #2 QuartzInitServer quartzStartup.c:95 (X11.bin+0x000100039bd6) #3 X11ApplicationMain X11Application.m:1238 (X11.bin+0x00010001cd94) #4 X11ControllerMain X11Controller.m:984 (X11.bin+0x00010002a5f2) #5 server_main quartzStartup.c:136 (X11.bin+0x000100039ffb) #6 do_start_x11_server bundle-main.c:436 (X11.bin+0x000100002e65) #7 _Xstart_x11_server mach_startupServer.c:189 (X11.bin+0x000100004e49) #8 mach_startup_server mach_startupServer.c:399 (X11.bin+0x0001000056e4) #9 mach_msg_server mach_msg.c:563 (libsystem_kernel.dylib+0x000000012186) #10 start <null>:29 (libdyld.dylib+0x000000005254) SUMMARY: ThreadSanitizer: data race mieq.c:263 in mieqEnqueue ================== Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com> Reviewed-by: Keith Packard <keithp@keithp.com>
-rw-r--r--configure.ac2
-rw-r--r--dix/dispatch.c7
-rw-r--r--include/dix.h6
-rw-r--r--os/WaitFor.c2
4 files changed, 11 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac
index c09b8543f..922ee0cc5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -812,7 +812,7 @@ APPLEWMPROTO="applewmproto >= 1.4"
LIBXSHMFENCE="xshmfence >= 1.1"
dnl Required modules
-XPROTO="xproto >= 7.0.28"
+XPROTO="xproto >= 7.0.30"
RANDRPROTO="randrproto >= 1.5.0"
RENDERPROTO="renderproto >= 0.11"
XEXTPROTO="xextproto >= 7.2.99.901"
diff --git a/dix/dispatch.c b/dix/dispatch.c
index 26a461b0d..adcc9cffd 100644
--- a/dix/dispatch.c
+++ b/dix/dispatch.c
@@ -195,7 +195,7 @@ UpdateCurrentTime(void)
systime.milliseconds = GetTimeInMillis();
if (systime.milliseconds < currentTime.milliseconds)
systime.months++;
- if (*checkForInput[0] != *checkForInput[1])
+ if (InputCheckPending())
ProcessInputEvents();
if (CompareTimeStamps(systime, currentTime) == LATER)
currentTime = systime;
@@ -395,7 +395,6 @@ Dispatch(void)
{
int result;
ClientPtr client;
- HWEventQueuePtr *icheck = checkForInput;
long start_tick;
nextFreeClientID = 1;
@@ -405,7 +404,7 @@ Dispatch(void)
init_client_ready();
while (!dispatchException) {
- if (*icheck[0] != *icheck[1]) {
+ if (InputCheckPending()) {
ProcessInputEvents();
FlushIfCriticalOutputPending();
}
@@ -425,7 +424,7 @@ Dispatch(void)
start_tick = SmartScheduleTime;
while (!isItTimeToYield) {
- if (*icheck[0] != *icheck[1])
+ if (InputCheckPending())
ProcessInputEvents();
FlushIfCriticalOutputPending();
diff --git a/include/dix.h b/include/dix.h
index ae9719ae9..240018b8d 100644
--- a/include/dix.h
+++ b/include/dix.h
@@ -136,6 +136,12 @@ typedef HWEventQueueType *HWEventQueuePtr;
extern _X_EXPORT HWEventQueuePtr checkForInput[2];
+static inline _X_NOTSAN Bool
+InputCheckPending(void)
+{
+ return (*checkForInput[0] != *checkForInput[1]);
+}
+
typedef struct _TimeStamp {
CARD32 months; /* really ~49.7 days */
CARD32 milliseconds;
diff --git a/os/WaitFor.c b/os/WaitFor.c
index 024df3521..7d5aa32c8 100644
--- a/os/WaitFor.c
+++ b/os/WaitFor.c
@@ -234,7 +234,7 @@ WaitForSomething(Bool are_ready)
} else
are_ready = clients_are_ready();
- if (*checkForInput[0] != *checkForInput[1])
+ if (InputCheckPending())
return FALSE;
if (are_ready) {