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authorSebastian Huber <sebastian.huber@embedded-brains.de>2022-03-30 16:53:29 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2022-04-28 20:46:50 +0200
commit210e32b60b9018e5db2d9741dc7aaa5d9b436999 (patch)
tree1ab37b8840ce2f34db3bbe36c9836da255e8dbac /libgcc
parentef9a53feae5701953da9161afef2aea0329ec8b2 (diff)
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gcov-tool: Add merge-stream subcommand
gcc/ * doc/gcov-tool.texi: Document merge-stream subcommand. * doc/invoke.texi (fprofile-info-section): Mention merge-stream subcommand of gcov-tool. * gcov-tool.cc (gcov_profile_merge_stream): Declare. (print_merge_stream_usage_message): New. (merge_stream_usage): Likewise. (do_merge_stream): Likewise. (print_usage): Call print_merge_stream_usage_message(). (main): Call do_merge_stream() to execute merge-stream subcommand. libgcc/ * libgcov-util.c (consume_stream): New. (get_target_profiles_for_merge): Likewise. (gcov_profile_merge_stream): Likewise.
Diffstat (limited to 'libgcc')
-rw-r--r--libgcc/libgcov-util.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/libgcc/libgcov-util.c b/libgcc/libgcov-util.c
index bf96f50..250dddd 100644
--- a/libgcc/libgcov-util.c
+++ b/libgcc/libgcov-util.c
@@ -735,6 +735,101 @@ gcov_profile_merge (struct gcov_info *tgt_profile, struct gcov_info *src_profile
return tgt_profile;
}
+/* Deserialize gcov_info objects and associated filenames from the file
+ specified by FILENAME to create a profile list. When FILENAME is NULL, read
+ from stdin. Return the profile list. */
+
+struct gcov_info *
+deserialize_profiles (const char *filename)
+{
+ read_profile_dir_init ();
+
+ while (true)
+ {
+ unsigned version;
+ const char *filename_of_info;
+ struct gcov_info *obj_info;
+
+ if (!gcov_magic (gcov_read_unsigned (), GCOV_FILENAME_MAGIC))
+ {
+ if (gcov_is_error () != 2)
+ fnotice (stderr, "%s:not a gcfn stream\n", filename);
+ break;
+ }
+
+ version = gcov_read_unsigned ();
+ if (version != GCOV_VERSION)
+ {
+ fnotice (stderr, "%s:incorrect gcov version %d vs %d \n",
+ filename, version, GCOV_VERSION);
+ break;
+ }
+
+ filename_of_info = gcov_read_string ();
+ if (!filename_of_info)
+ {
+ fnotice (stderr, "%s:no filename in gcfn stream\n",
+ filename);
+ break;
+ }
+
+ obj_info = read_gcda_file (filename);
+ if (!obj_info)
+ break;
+
+ obj_info->filename = filename_of_info;
+ }
+
+ return gcov_info_head;
+}
+
+/* For each profile of the list specified by SRC_PROFILE, read the GCDA file of
+ the profile. If a GCDA file exists, add the profile to a list. Return the
+ profile list. */
+
+struct gcov_info *
+get_target_profiles_for_merge (struct gcov_info *src_profile)
+{
+ struct gcov_info *gi_ptr;
+
+ read_profile_dir_init ();
+
+ for (gi_ptr = src_profile; gi_ptr; gi_ptr = gi_ptr->next)
+ if (gcov_open (gi_ptr->filename, 1))
+ {
+ (void)read_gcda_file (gi_ptr->filename);
+ gcov_close ();
+ }
+
+ return gcov_info_head;
+}
+
+/* Deserialize gcov_info objects and associated filenames from the file
+ specified by FILENAME to create a source profile list. When FILENAME is
+ NULL, read from stdin. Use the filenames of the source profile list to get
+ a target profile list. Merge the source profile list into the target
+ profile list using weights W1 and W2. Return the list of merged gcov_info
+ objects. Return NULL if the list is empty. */
+
+struct gcov_info *
+gcov_profile_merge_stream (const char *filename, int w1, int w2)
+{
+ struct gcov_info *tgt_profile;
+ struct gcov_info *src_profile;
+
+ if (!gcov_open (filename, 1))
+ {
+ fnotice (stderr, "%s:cannot open\n", filename);
+ return NULL;
+ }
+
+ src_profile = deserialize_profiles (filename ? filename : "<stdin>");
+ gcov_close ();
+ tgt_profile = get_target_profiles_for_merge (src_profile);
+
+ return gcov_profile_merge (tgt_profile, src_profile, w1, w2);
+}
+
typedef gcov_type (*counter_op_fn) (gcov_type, void*, void*);
/* Performing FN upon arc counters. */