Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH v2 9/10] perf tools: Introduce pstack_peek() | Date | Fri, 24 Apr 2015 10:15:32 +0900 |
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The pstack_peek() is to get the topmost entry without removing it.
Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- I also pushed to perf/tui-cleanup-v4.
tools/perf/util/pstack.c | 7 +++++++ tools/perf/util/pstack.h | 1 + 2 files changed, 8 insertions(+)
diff --git a/tools/perf/util/pstack.c b/tools/perf/util/pstack.c index a126e6cc6e73..b234a6e3d0d4 100644 --- a/tools/perf/util/pstack.c +++ b/tools/perf/util/pstack.c @@ -74,3 +74,10 @@ void *pstack__pop(struct pstack *pstack) pstack->entries[pstack->top] = NULL; return ret; } + +void *pstack__peek(struct pstack *pstack) +{ + if (pstack->top == 0) + return NULL; + return pstack->entries[pstack->top - 1]; +} diff --git a/tools/perf/util/pstack.h b/tools/perf/util/pstack.h index c3cb6584d527..ded7f2e36624 100644 --- a/tools/perf/util/pstack.h +++ b/tools/perf/util/pstack.h @@ -10,5 +10,6 @@ bool pstack__empty(const struct pstack *pstack); void pstack__remove(struct pstack *pstack, void *key); void pstack__push(struct pstack *pstack, void *key); void *pstack__pop(struct pstack *pstack); +void *pstack__peek(struct pstack *pstack); #endif /* _PERF_PSTACK_ */ -- 2.3.4
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