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Implement the prof.gdump mallctl.

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This feature makes it possible to toggle the gdump feature on/off during
program execution, whereas the the opt.prof_dump mallctl value can only
be set during program startup.

This resolves #72.
This commit is contained in:
Jason Evans 2015-01-25 21:16:57 -08:00
parent 41f2e692f6
commit 5b8ed5b7c9
7 changed files with 133 additions and 10 deletions
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29
test/unit/prof_gdump.c
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@ -21,8 +21,9 @@ prof_dump_open_intercept(bool propagate_err, const char *filename)
TEST_BEGIN(test_gdump)
{
bool active;
void *p, *q;
bool active, gdump, gdump_old;
void *p, *q, *r, *s;
size_t sz;
test_skip_if(!config_prof);
@ -42,8 +43,32 @@ TEST_BEGIN(test_gdump)
assert_ptr_not_null(q, "Unexpected mallocx() failure");
assert_true(did_prof_dump_open, "Expected a profile dump");
gdump = false;
sz = sizeof(gdump_old);
assert_d_eq(mallctl("prof.gdump", &gdump_old, &sz, &gdump,
sizeof(gdump)), 0,
"Unexpected mallctl failure while disabling prof.gdump");
assert(gdump_old);
did_prof_dump_open = false;
r = mallocx(chunksize, 0);
assert_ptr_not_null(q, "Unexpected mallocx() failure");
assert_false(did_prof_dump_open, "Unexpected profile dump");
gdump = true;
sz = sizeof(gdump_old);
assert_d_eq(mallctl("prof.gdump", &gdump_old, &sz, &gdump,
sizeof(gdump)), 0,
"Unexpected mallctl failure while enabling prof.gdump");
assert(!gdump_old);
did_prof_dump_open = false;
s = mallocx(chunksize, 0);
assert_ptr_not_null(q, "Unexpected mallocx() failure");
assert_true(did_prof_dump_open, "Expected a profile dump");
dallocx(p, 0);
dallocx(q, 0);
dallocx(r, 0);
dallocx(s, 0);
}
TEST_END