Enhance a debugging log message to better identify a mutex.

FossilOrigin-Name: e60cb6d8852ebf42659c7f2e86a1f6a2492b4664

diff --git a/manifest b/manifest
index e32a7733badbbd699c7afe9ef2960f9d14851be4..e929ff08399b060254aca5f1d859be5692f5df21 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Use\s__sync_synchronous(),\swhen\savailable,\sinstead\sof\sa\smutex\swhen\sa\smemory\nbarrier\sis\sneeded.
-D 2016-07-29T14:23:23.484
+C Enhance\sa\sdebugging\slog\smessage\sto\sbetter\sidentify\sa\smutex.
+D 2016-07-29T14:31:30.854
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -205,7 +205,7 @@ F src/memjournal.c 3eb2c0b51adbd869cb6a44780323f05fa904dc85
 F src/mutex.c 84a073c9a23a8d7bdd2ea832522d1730df18812c
 F src/mutex.h 779d588e3b7756ec3ecf7d78cde1d84aba414f85
 F src/mutex_noop.c f3f09fd7a2eb4287cfc799753ffc30380e7b71a1
-F src/mutex_unix.c 9af77da894a1d5e16d5b8c11659b4c6de7ca1729
+F src/mutex_unix.c 3a24b5f2e46c3a676606a28ac5d00c0462231f98
 F src/mutex_w32.c 06bfff9a3a83b53389a51a967643db3967032e1e
 F src/notify.c 9711a7575036f0d3040ba61bc6e217f13a9888e7
 F src/os.c 1b147e4cf7cc39e618115c14a086aed44bc91ace
@@ -1207,7 +1207,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 33c7ef7aca69f9b714bc25b2af5ae2a189d3ba78
-R 2ebf89f18db464fb30dce64acaa43e4c
-U drh
-Z 3585d2cb51ce851abd09e86c546f6117
+P 7d4562e9d577e21406e05300b9a1ad56fded2309
+R 710a8735eaf385edb6fcbb8a5dae0f50
+U dan
+Z 556a1321b6b2b74422c424e03f2895a3

diff --git a/manifest.uuid b/manifest.uuid
index 082a80b4a3e39fde42ff56a9a8717d47cf46cdac..23ae5967a18ec482d25cbc3a812a01ace9767332 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-7d4562e9d577e21406e05300b9a1ad56fded2309
\ No newline at end of file
+e60cb6d8852ebf42659c7f2e86a1f6a2492b4664
\ No newline at end of file

diff --git a/src/mutex_unix.c b/src/mutex_unix.c
index f5a652041cae5ea44bd42d1a9954a81f1979cdab..3ef651b0d2aa34cab499a8a6df42baa9347be0f1 100644 (file)
--- a/src/mutex_unix.c
+++ b/src/mutex_unix.c
@@ -255,8 +255,13 @@ static void pthreadMutexEnter(sqlite3_mutex *p){
 #endif
   iTimer = sqlite3Hwtime() - iTimer;
   if( iTimer>100000 ){
+    sqlite3_mutex *pMaster = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER);
+    int id = -1;
+    if( p>=pMaster && p<=&pMaster[SQLITE_MUTEX_STATIC_APP3-2] ){
+      id = (int)(p - pMaster) + 2;
+    }
     sqlite3_log(SQLITE_NOTICE, "slow mutex: %lld cycles on %d/%p",
-                iTimer, MUTEX_ID(p), p);
+                iTimer, id, p);
   }
 #endif