From: Nicholas Nethercote <njn@valgrind.org>
Date: Tue, 30 Sep 2003 14:03:21 +0000 (+0000)
Subject: Made VG_(read_millisecond_timer)() available to skins.  Also made it cope
X-Git-Tag: svn/VALGRIND_2_1_0~165
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=18de7ba96be2fa8bb1253340178878629a483540;p=thirdparty%2Fvalgrind.git

Made VG_(read_millisecond_timer)() available to skins.  Also made it cope
with being called from SK_(pre_clo_init)(), before its startup code has been
run (just returns 0).


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1868
---

diff --git a/coregrind/vg_include.h b/coregrind/vg_include.h
index 4bae44fa62..06fb5f6ae5 100644
--- a/coregrind/vg_include.h
+++ b/coregrind/vg_include.h
@@ -1038,7 +1038,6 @@ extern Char* VG_(arena_strdup) ( ArenaId aid, const Char* s);
 /* Skins shouldn't need these...(?) */
 extern void VG_(start_rdtsc_calibration) ( void );
 extern void VG_(end_rdtsc_calibration) ( void );
-extern UInt VG_(read_millisecond_timer) ( void );
 
 extern Int VG_(fcntl) ( Int fd, Int cmd, Int arg );
 extern Int VG_(select)( Int n, 
diff --git a/coregrind/vg_mylibc.c b/coregrind/vg_mylibc.c
index 60e3b84fe9..f42d84529f 100644
--- a/coregrind/vg_mylibc.c
+++ b/coregrind/vg_mylibc.c
@@ -1327,7 +1327,9 @@ static ULong              rdtsc_cal_end_raw;
 UInt VG_(read_millisecond_timer) ( void )
 {
    ULong rdtsc_now;
-   vg_assert(rdtsc_calibration_state == 2);
+   // If called before rdtsc setup completed (eg. from SK_(pre_clo_init)())
+   // just return 0.
+   if (rdtsc_calibration_state < 2) return 0;
    rdtsc_now = do_rdtsc_insn();
    vg_assert(rdtsc_now > rdtsc_cal_end_raw);
    rdtsc_now -= rdtsc_cal_end_raw;
diff --git a/include/vg_skin.h b/include/vg_skin.h
index d2cae54be2..8b111ce2e2 100644
--- a/include/vg_skin.h
+++ b/include/vg_skin.h
@@ -495,6 +495,11 @@ extern Int VG_(kkill)        ( Int pid, Int signo );
 extern Int VG_(ksigpending)  ( vki_ksigset_t* set );
 
 
+/* ------------------------------------------------------------------ */
+/* other, randomly useful functions */
+extern UInt VG_(read_millisecond_timer) ( void );
+
+
 /*====================================================================*/
 /*=== UCode definition                                             ===*/
 /*====================================================================*/