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| author | tejohnson <tejohnson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-05-08 21:22:28 +0000 |
|---|---|---|
| committer | tejohnson <tejohnson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-05-08 21:22:28 +0000 |
| commit | 4ef7becbf1f12b8f2200ccee6740731bc7853350 (patch) | |
| tree | e8169275509aad912d8d4b57d59a52610ef8bcc8 /gcc/gcov-io.h | |
| parent | c02159a73f8377f6751f96a07010ad54d96c172e (diff) | |
| download | gcc-4ef7becbf1f12b8f2200ccee6740731bc7853350.tar.gz | |
This patch adds functionality to libgcov to enable user applications to
collect profile data only in regions of interest. This is useful, for
example, to collect profile data from a long-running server only
during the time when it is serving requests.
Specifically, the new routines __gcov_reset will clear all profile counters
to zero and __gcov_dump will write out the profile information collected so
far. A global variable is used to prevent writing out the profile a
second time during exit.
2012-05-08 Teresa Johnson <tejohnson@google.com>
* libgcc/libgcov.c (gcov_clear, __gcov_reset): New functions.
(__gcov_dump): Ditto.
(gcov_dump_complete): New global variable.
(gcov_exit): Export hidden to enable use in L_gcov_dump.
(__gcov_flush): Outline functionality now in gcov_clear.
* libgcc/Makefile.in (L_gcov_reset, L_gcov_dump): Define.
* gcc/gcov-io.h (__gcov_reset, __gcov_dump): Declare.
* gcc/doc/gcov.texi: Add note on using __gcov_reset and __gcov_dump.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@187297 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/gcov-io.h')
| -rw-r--r-- | gcc/gcov-io.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/gcov-io.h b/gcc/gcov-io.h index b80f7069620..c15e64b197b 100644 --- a/gcc/gcov-io.h +++ b/gcc/gcov-io.h @@ -458,6 +458,12 @@ extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN; /* Called before fork, to avoid double counting. */ extern void __gcov_flush (void) ATTRIBUTE_HIDDEN; +/* Function to reset all counters to 0. */ +extern void __gcov_reset (void); + +/* Function to enable early write of profile information so far. */ +extern void __gcov_dump (void); + /* The merge function that just sums the counters. */ extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |