perf tools: Don't die() in perf_header_attr__add_id()

Propagate the errors instead, the users are the ones to decide
what to do if a library call fails.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1258427892-16312-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 5411be4..2a85205 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -327,7 +327,10 @@ try_again:
                exit(-1);
        }
 
-       perf_header_attr__add_id(h_attr, read_data.id);
+       if (perf_header_attr__add_id(h_attr, read_data.id) < 0) {
+               pr_warning("Not enough memory to add id\n");
+               exit(-1);
+       }
 
        assert(fd[nr_cpu][counter] >= 0);
        fcntl(fd[nr_cpu][counter], F_SETFL, O_NONBLOCK);

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 23ccdda..dee1ed2 100644 (file)
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -39,18 +39,23 @@ void perf_header_attr__delete(struct perf_header_attr *self)
        free(self);
 }
 
-void perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
+int perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
 {
        int pos = self->ids;
 
        self->ids++;
        if (self->ids > self->size) {
-               self->size *= 2;
-               self->id = realloc(self->id, self->size * sizeof(u64));
-               if (!self->id)
-                       die("nomem");
+               int nsize = self->size * 2;
+               u64 *nid = realloc(self->id, nsize * sizeof(u64));
+
+               if (nid == NULL)
+                       return -1;
+
+               self->size = nsize;
+               self->id = nid;
        }
        self->id[pos] = id;
+       return 0;
 }
 
 /*
@@ -444,7 +449,8 @@ struct perf_header *perf_header__read(int fd)
                for (j = 0; j < nr_ids; j++) {
                        do_read(fd, &f_id, sizeof(f_id));
 
-                       perf_header_attr__add_id(attr, f_id);
+                       if (perf_header_attr__add_id(attr, f_id) < 0)
+                               die("nomem");
                }
                if (perf_header__add_attr(self, attr) < 0)
                         die("nomem");

diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index b0d5cd7..f46a94e 100644 (file)
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -67,7 +67,7 @@ char *perf_header__find_event(u64 id);
 struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr);
 void perf_header_attr__delete(struct perf_header_attr *self);
 
-void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
+int perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
 
 u64 perf_header__sample_type(struct perf_header *header);
 struct perf_event_attr *