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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-07-11 11:32:06 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-20 16:08:37 +0200 |
| commit | 10d34700223b14ed94a6399cf026142956f87965 (patch) | |
| tree | fbb9e3142583266b2d1622cb861df04d23e9b8b2 /tools/perf/util/util.h | |
| parent | perf tools: Automatically use guest kcore_dir if present (diff) | |
| download | linux-10d34700223b14ed94a6399cf026142956f87965.tar.xz linux-10d34700223b14ed94a6399cf026142956f87965.zip | |
perf tools: Add reallocarray_as_needed()
Add helper reallocarray_as_needed() to reallocate an array to a larger
size and initialize the extra entries to an arbitrary value.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220711093218.10967-24-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/util.h')
| -rw-r--r-- | tools/perf/util/util.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 0f78f1e7782d..c1f2d423a9ec 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -79,4 +79,19 @@ struct perf_debuginfod { void perf_debuginfod_setup(struct perf_debuginfod *di); char *filename_with_chroot(int pid, const char *filename); + +int do_realloc_array_as_needed(void **arr, size_t *arr_sz, size_t x, + size_t msz, const void *init_val); + +#define realloc_array_as_needed(a, n, x, v) ({ \ + typeof(x) __x = (x); \ + __x >= (n) ? \ + do_realloc_array_as_needed((void **)&(a), \ + &(n), \ + __x, \ + sizeof(*(a)), \ + (const void *)(v)) : \ + 0; \ + }) + #endif /* GIT_COMPAT_UTIL_H */ |