From: drh <drh@noemail.net>
Date: Wed, 4 Aug 2004 14:44:33 +0000 (+0000)
Subject: Separate P4 timing asm code out of the SQLITE_DEBUG macro so that SQLITE_DEBUG
X-Git-Tag: version-3.6.10~4269
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a9600bc692ec7852aa1357392def9aaef468a587;p=thirdparty%2Fsqlite.git

Separate P4 timing asm code out of the SQLITE_DEBUG macro so that SQLITE_DEBUG
can be used on non-x86 machines and with compilers other than GCC.
Ticket #838. (CVS 1876)

FossilOrigin-Name: add266ccc3146fa56572d109e84c8a79dc3df2ca
---

diff --git a/manifest b/manifest
index 01711af2fb..7fc04d8500 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Separate\sthe\sifdefs\sfor\sINTPTR_TYPE\sand\sUINTPTR_TYPE\sin\ssqliteInt.h.\s(CVS\s1875)
-D 2004-08-04T14:29:23
+C Separate\sP4\stiming\sasm\scode\sout\sof\sthe\sSQLITE_DEBUG\smacro\sso\sthat\sSQLITE_DEBUG\ncan\sbe\sused\son\snon-x86\smachines\sand\swith\scompilers\sother\sthan\sGCC.\nTicket\s#838.\s(CVS\s1876)
+D 2004-08-04T14:44:34
 F Makefile.in 4a5e570a9e2d35b09c31b3cf01b78cea764ade4b
 F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -42,12 +42,12 @@ F src/legacy.c ad23746f15f67e34577621b1875f639c94839e1f
 F src/main.c 41da595846e299b757cc413d18de804f97f68748
 F src/md5.c 7ae1c39044b95de2f62e066f47bb1deb880a1070
 F src/os.h d1780e0db95cad01f213d48da22ab490eb4fd345
-F src/os_common.h fe9604754116bd2f2702d58f82d2d8b89998cb21
+F src/os_common.h cd7eb025fdab7dc91e0e97bf6310f1648205857f
 F src/os_mac.c 3d31e26be1411acfb7961033098631b4f3486fdf
 F src/os_mac.h 51d2445f47e182ed32d3bd6937f81070c6fd9bd4
 F src/os_test.c 6bf10100de2ca199a91fe7ac6474561c8a7166ae
 F src/os_test.h 6a26a4978492e4bbdbf385554958418ff02db162
-F src/os_unix.c 02a08065f90ca2737514cdc19d60eb3c4b98fa6b
+F src/os_unix.c d084e3443211e1556f1a33fe48580e135facbcf7
 F src/os_unix.h f3097815e041e82e24d92505e1ff61ba24172d13
 F src/os_win.c 54181eb73cb4783c4241feca9eaa490768b39008
 F src/os_win.h babd4e912967c6b09088cfe38a45e8005a07ba44
@@ -240,7 +240,7 @@ F www/tclsqlite.tcl 06a86cba4d7fc88e2bcd633b57702d3d16abebb5
 F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
 F www/version3.tcl 092a01f5ef430d2c4acc0ae558d74c4bb89638a0
 F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
-P 7ecff04a6153aa200233e6c0846a65e0213c3179
-R bb7c51783ef3b73e24fdafb73590b839
+P 4e7953c13fd2cb32e5c97737c4b2f99b1b1edc9b
+R 32ad53e3950d031bf8dd62a53bdface5
 U drh
-Z 5df9b4b7e13f1695014f4ed2b1c6b64b
+Z 06402d986b3876ed10b4e307c21b4abe
diff --git a/manifest.uuid b/manifest.uuid
index 4326682dd4..9a62ae3ef4 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-4e7953c13fd2cb32e5c97737c4b2f99b1b1edc9b
\ No newline at end of file
+add266ccc3146fa56572d109e84c8a79dc3df2ca
\ No newline at end of file
diff --git a/src/os_common.h b/src/os_common.h
index c7b5fe0492..dc8f88096a 100644
--- a/src/os_common.h
+++ b/src/os_common.h
@@ -18,25 +18,19 @@
 ** general purpose header file.
 */
 
-
 /*
-** Macros for performance tracing.  Normally turned off.  Only works
-** on i486 hardware.
+** At least two bugs have slipped in because we changed the MEMORY_DEBUG
+** macro to SQLITE_DEBUG and some older makefiles have not yet made the
+** switch.  The following code should catch this problem at compile-time.
 */
+#ifdef MEMORY_DEBUG
+# error "The MEMORY_DEBUG macro is obsolete.  Use SQLITE_DEBUG instead."
+#endif
+
+
 int sqlite3_os_trace = 0;
 #ifdef SQLITE_DEBUG
 static int last_page = 0;
-__inline__ unsigned long long int hwtime(void){
-  unsigned long long int x;
-  __asm__("rdtsc\n\t"
-          "mov %%edx, %%ecx\n\t"
-          :"=A" (x));
-  return x;
-}
-static unsigned long long int g_start;
-static unsigned int elapse;
-#define TIMER_START       g_start=hwtime()
-#define TIMER_END         elapse=hwtime()-g_start
 #define SEEK(X)           last_page=(X)
 #define TRACE1(X)         if( sqlite3_os_trace ) sqlite3DebugPrintf(X)
 #define TRACE2(X,Y)       if( sqlite3_os_trace ) sqlite3DebugPrintf(X,Y)
@@ -47,8 +41,6 @@ static unsigned int elapse;
 #define TRACE7(X,Y,Z,A,B,C,D) \
     if(sqlite3_os_trace) sqlite3DebugPrintf(X,Y,Z,A,B,C,D)
 #else
-#define TIMER_START
-#define TIMER_END
 #define SEEK(X)
 #define TRACE1(X)
 #define TRACE2(X,Y)
@@ -59,6 +51,28 @@ static unsigned int elapse;
 #define TRACE7(X,Y,Z,A,B,C,D)
 #endif
 
+/*
+** Macros for performance tracing.  Normally turned off.  Only works
+** on i486 hardware.
+*/
+#ifdef SQLITE_PERFORMANCE_TRACE
+__inline__ unsigned long long int hwtime(void){
+  unsigned long long int x;
+  __asm__("rdtsc\n\t"
+          "mov %%edx, %%ecx\n\t"
+          :"=A" (x));
+  return x;
+}
+static unsigned long long int g_start;
+static unsigned int elapse;
+#define TIMER_START       g_start=hwtime()
+#define TIMER_END         elapse=hwtime()-g_start
+#define TIMER_ELAPSED     elapse
+#else
+#define TIMER_START
+#define TIMER_END
+#define TIMER_ELAPSED     0
+#endif
 
 /*
 ** If we compile with the SQLITE_TEST macro set, then the following block
diff --git a/src/os_unix.c b/src/os_unix.c
index bdc0ea39ed..4d6039161d 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -617,7 +617,7 @@ int sqlite3OsRead(OsFile *id, void *pBuf, int amt){
   TIMER_START;
   got = read(id->h, pBuf, amt);
   TIMER_END;
-  TRACE4("READ    %-3d %7d %d\n", id->h, last_page, elapse);
+  TRACE4("READ    %-3d %7d %d\n", id->h, last_page, TIMER_ELAPSED);
   SEEK(0);
   /* if( got<0 ) got = 0; */
   if( got==amt ){
@@ -641,7 +641,7 @@ int sqlite3OsWrite(OsFile *id, const void *pBuf, int amt){
     pBuf = &((char*)pBuf)[wrote];
   }
   TIMER_END;
-  TRACE4("WRITE   %-3d %7d %d\n", id->h, last_page, elapse);
+  TRACE4("WRITE   %-3d %7d %d\n", id->h, last_page, TIMER_ELAPSED);
   SEEK(0);
   if( amt>0 ){
     return SQLITE_FULL;