[Qemu-devel] [PULL 36/65] libqos/ahci: Add ahci_clean_mem

[Stefan Hajnoczi <stefanha@redhat.com>]

From: John Snow <jsnow@redhat.com>

Clean up guest memory being used in ahci_clean_mem, to be
called during ahci_shutdown. With all guest memory leaks removed,
add an option to the allocator to throw an assertion if a leak
occurs.

This test adds some sanity to both the AHCI library and the
allocator.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1423158090-25580-18-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/ahci-test.c     |  3 +++
 tests/libqos/ahci.c   | 18 ++++++++++++++++++
 tests/libqos/ahci.h   |  1 +
 tests/libqos/malloc.c |  5 +++++
 tests/libqos/malloc.h |  1 +
 5 files changed, 28 insertions(+)

diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index 47491fe..3a0131a 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -86,6 +86,7 @@ static AHCIQState *ahci_boot(void)
         "-device ide-hd,drive=drive0 "
         "-global ide-hd.ver=%s";
     s->parent = qtest_pc_boot(cli, tmp_path, "testdisk", "version");
+    alloc_set_flags(s->parent->alloc, ALLOC_LEAK_ASSERT);
 
     /* Verify that we have an AHCI device present. */
     s->dev = get_ahci_device(&s->fingerprint);
@@ -99,6 +100,8 @@ static AHCIQState *ahci_boot(void)
 static void ahci_shutdown(AHCIQState *ahci)
 {
     QOSState *qs = ahci->parent;
+
+    ahci_clean_mem(ahci);
     free_ahci_device(ahci->dev);
     g_free(ahci);
     qtest_shutdown(qs);
diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index c6fa7e0..170ec5a 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -130,6 +130,24 @@ void free_ahci_device(QPCIDevice *dev)
     qpci_free_pc(pcibus);
 }
 
+/* Free all memory in-use by the AHCI device. */
+void ahci_clean_mem(AHCIQState *ahci)
+{
+    uint8_t port, slot;
+
+    for (port = 0; port < 32; ++port) {
+        if (ahci->port[port].fb) {
+            ahci_free(ahci, ahci->port[port].fb);
+        }
+        if (ahci->port[port].clb) {
+            for (slot = 0; slot < 32; slot++) {
+                ahci_destroy_command(ahci, port, slot);
+            }
+            ahci_free(ahci, ahci->port[port].clb);
+        }
+    }
+}
+
 /*** Logical Device Initialization ***/
 
 /**
diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
index 9133033..39b99d3 100644
--- a/tests/libqos/ahci.h
+++ b/tests/libqos/ahci.h
@@ -499,6 +499,7 @@ uint64_t ahci_alloc(AHCIQState *ahci, size_t bytes);
 void ahci_free(AHCIQState *ahci, uint64_t addr);
 QPCIDevice *get_ahci_device(uint32_t *fingerprint);
 void free_ahci_device(QPCIDevice *dev);
+void ahci_clean_mem(AHCIQState *ahci);
 void ahci_pci_enable(AHCIQState *ahci);
 void start_ahci_device(AHCIQState *ahci);
 void ahci_hba_enable(AHCIQState *ahci);
diff --git a/tests/libqos/malloc.c b/tests/libqos/malloc.c
index 8cce1ba..ad283f6 100644
--- a/tests/libqos/malloc.c
+++ b/tests/libqos/malloc.c
@@ -324,3 +324,8 @@ void alloc_set_page_size(QGuestAllocator *allocator, size_t page_size)
     g_assert(is_power_of_2(page_size));
     allocator->page_size = page_size;
 }
+
+void alloc_set_flags(QGuestAllocator *allocator, QAllocOpts opts)
+{
+    allocator->opts |= opts;
+}
diff --git a/tests/libqos/malloc.h b/tests/libqos/malloc.h
index a39dba4..71ac407 100644
--- a/tests/libqos/malloc.h
+++ b/tests/libqos/malloc.h
@@ -36,5 +36,6 @@ QGuestAllocator *alloc_init(uint64_t start, uint64_t end);
 QGuestAllocator *alloc_init_flags(QAllocOpts flags,
                                   uint64_t start, uint64_t end);
 void alloc_set_page_size(QGuestAllocator *allocator, size_t page_size);
+void alloc_set_flags(QGuestAllocator *allocator, QAllocOpts opts);
 
 #endif
-- 
2.1.0