Commit f10a014a authored by jan.koester's avatar jan.koester
Browse files

test

parent 1bad10de

src/test/e2e/thread_reclaim_test.cpp

+12 −7
Changes for src/test/e2e/thread_reclaim_test.cpp: 12 added lines, 7 removed lines.
Original line number Diff line number Diff line
@@ -34,13 +34,14 @@ static int count_maps() { 
    return n;

}



static long rss_kb() {

static long status_kb(const char* key) {

    FILE* f = fopen("/proc/self/status", "r");

    if (!f) return -1;

    long kb = -1;

    size_t n = strlen(key);

    char line[256];

    while (fgets(line, sizeof line, f))

        if (strncmp(line, "VmRSS:", 6) == 0) { kb = atol(line + 6); break; }

        if (strncmp(line, key, n) == 0) { kb = atol(line + n); break; }

    fclose(f);

    return kb;

}
@@ -100,15 +101,19 @@ int main() { 
    for (int kind = 0; kind < 4; kind++) {

        CHECK(run_round(kind, N) == 0, "thread creation failed");

        int maps0 = count_maps();

        long rss0 = rss_kb();

        long vm0 = status_kb("VmSize:");

        long rss0 = status_kb("VmRSS:");

        CHECK(run_round(kind, N) == 0, "thread creation failed");

        CHECK(run_round(kind, N) == 0, "thread creation failed");

        int maps1 = count_maps();

        long rss1 = rss_kb();

        printf("%s: maps %d -> %d, rss %ld -> %ld kB\n",

               names[kind], maps0, maps1, rss0, rss1);

        /* leaked, each of the 600 threads cost a mapping and ~50 kB */

        long vm1 = status_kb("VmSize:");

        long rss1 = status_kb("VmRSS:");

        printf("%s: maps %d -> %d, vm %ld -> %ld kB, rss %ld -> %ld kB\n",

               names[kind], maps0, maps1, vm0, vm1, rss0, rss1);

        /* a leaked stack is 16 MB of address space; adjacent leaked

         * mappings merge, so their count alone proves nothing */

        CHECK(maps1 - maps0 < 20, "mappings grow with every thread");

        CHECK(vm1 - vm0 < 64 * 1024, "address space grows with every thread");

        CHECK(rss1 - rss0 < 2048, "resident size grows with every thread");

    }