Implement the prof.gdump mallctl.

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.

1 files changed, 27 insertions, 2 deletions

diff --git a/test/unit/prof_gdump.c b/test/unit/prof_gdump.c
index a00b105..a0e6ee9 100644
--- a/test/unit/prof_gdump.c
+++ b/test/unit/prof_gdump.c
@@ -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