[Qemu-devel] [PATCH 12/15] qtest/ahci: Enforce zero-leaks for guest mem usage

[John Snow]

The purpose of this patch is to aid in debugging the new
malloc-pc interface for guest memory, by enabling the
enforcing of no guest memory blocks in use at exit time.

Signed-off-by: John Snow <js...@redhat.com>
---
 tests/ahci-test.c | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index dcc0748..3f92618 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -436,6 +436,7 @@ static void ahci_test_msicap(AHCIState *ahci, uint8_t 
offset);
 static void ahci_test_pmcap(AHCIState *ahci, uint8_t offset);
 static void get_command_header(AHCIState *ahci, uint8_t px,
                                uint8_t cx, AHCICommand *cmd);
+static void destroy_command(AHCIState *ahci, uint8_t px, uint8_t cx);
 
 /*** Utilities ***/
 
@@ -506,7 +507,9 @@ static void qtest_boot(const char *cmdline_fmt, ...)
 
     qtest_start(cmdline);
     qtest_irq_intercept_in(global_qtest, "ioapic");
-    guest_malloc = pc_alloc_init();
+    /* Enforce 0 leaks. */
+    guest_malloc = pc_alloc_init_flags(PC_ALLOC_LEAK_ASSERT |
+                                       PC_ALLOC_PARANOID);
 
     g_free(cmdline);
 }
@@ -516,8 +519,10 @@ static void qtest_boot(const char *cmdline_fmt, ...)
  */
 static void qtest_shutdown(void)
 {
-    g_free(guest_malloc);
-    guest_malloc = NULL;
+    if (guest_malloc) {
+        pc_alloc_uninit(guest_malloc);
+        guest_malloc = NULL;
+    }
     qtest_end();
 }
 
@@ -547,6 +552,20 @@ static AHCIState *ahci_boot(void)
  */
 static void ahci_shutdown(AHCIState *ahci)
 {
+    uint8_t px, cx;
+
+    for (px = 0; px < 32; ++px) {
+        if (ahci->port[px].fb) {
+            guest_free(guest_malloc, ahci->port[px].fb);
+        }
+        if (ahci->port[px].clb) {
+            for (cx = 0; cx < 32; cx++) {
+                destroy_command(ahci, px, cx);
+            }
+            guest_free(guest_malloc, ahci->port[px].clb);
+        }
+    }
+
     free_ahci_device(ahci->dev);
     g_free(ahci);
     qtest_shutdown();
@@ -1676,6 +1695,8 @@ static void ahci_test_identify(AHCIState *ahci)
     string_bswap16(&buff[23], 8);
     rc = memcmp(&buff[23], "version ", 8);
     g_assert_cmphex(rc, ==, 0);
+
+    guest_free(guest_malloc, data_ptr);
 }
 
 
/******************************************************************************/
-- 
1.9.3