This patch set is a proof of concept.
The aim is to better support gcov in free-standing environments. For example,
you can run a test executable which dumps all gcov info objects in a serial
data stream using __gcov_info_to_gcda() and the new __gcov_filename_to_gcfn().
It could be encoded as base64. It could be also compressed. On the host you
unpack the encoded data stream and feed it into gcov-tool using the new
"merge-stream" subcommand:
gcov-tool --help
Usage: gcov-tool [OPTION]... SUB_COMMAND [OPTION]...
Offline tool to handle gcda counts
-h, --help Print this help, then exit
-v, --version Print version number, then exit
merge-stream [options] [stream-file] Merge coverage stream file (or stdin)
and coverage file contents
-v, --verbose Verbose mode
-w, --weight <w1,w2> Set weights (float point values)
Example:
base64 -d log.txt | gcov-tool merge-stream
The patch set does not change the format of gcda files.
TODO:
* Documentation
* Tests
Sebastian Huber (12):
gcov-tool: Allow merging of empty profile lists
gcov: Add mode to all gcov_open()
gcov: Add open mode parameter to gcov_do_dump()
gcov: Make gcov_seek() static
gcov: Add __gcov_filename_to_gcfn()
gcov-tool: Support file input from stdin
gcov: Use xstrdup()
gcov: Move prepend to list to read_gcda_file()
gcov: Move gcov_open() to caller of read_gcda_file()
gcov: Fix integer types in ftw_read_file()
gcov: Record EOF error during read
gcov-tool: Add merge-stream subcommand
gcc/gcov-io.cc | 76 ++++++++++++++-----
gcc/gcov-io.h | 35 +++++----
gcc/gcov-tool.cc | 107 +++++++++++++++++++++-----
libgcc/gcov.h | 17 ++++-
libgcc/libgcov-driver-system.c | 7 +-
libgcc/libgcov-driver.c | 42 ++++++++--
libgcc/libgcov-util.c | 135 +++++++++++++++++++++++++--------
libgcc/libgcov.h | 3 -
8 files changed, 326 insertions(+), 96 deletions(-)
--
2.34.1
