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-rw-r--r--lib/profile/InstrProfilingPlatformFuchsia.c93
1 files changed, 53 insertions, 40 deletions
diff --git a/lib/profile/InstrProfilingPlatformFuchsia.c b/lib/profile/InstrProfilingPlatformFuchsia.c
index 80beb4145460..2388871a2d54 100644
--- a/lib/profile/InstrProfilingPlatformFuchsia.c
+++ b/lib/profile/InstrProfilingPlatformFuchsia.c
@@ -27,6 +27,7 @@
#include <zircon/process.h>
#include <zircon/sanitizer.h>
+#include <zircon/status.h>
#include <zircon/syscalls.h>
#include "InstrProfiling.h"
@@ -57,45 +58,57 @@ static inline void lprofWrite(const char *fmt, ...) {
__sanitizer_log_write(s, ret + 1);
}
-static uint32_t lprofVMOWriter(ProfDataWriter *This, ProfDataIOVec *IOVecs,
- uint32_t NumIOVecs) {
- /* Allocate VMO if it hasn't been created yet. */
- if (__llvm_profile_vmo == ZX_HANDLE_INVALID) {
- /* Get information about the current process. */
- zx_info_handle_basic_t Info;
- zx_status_t Status =
- _zx_object_get_info(_zx_process_self(), ZX_INFO_HANDLE_BASIC, &Info,
- sizeof(Info), NULL, NULL);
- if (Status != ZX_OK)
- return -1;
-
- /* Create VMO to hold the profile data. */
- Status = _zx_vmo_create(0, ZX_VMO_RESIZABLE, &__llvm_profile_vmo);
- if (Status != ZX_OK)
- return -1;
-
- /* Give the VMO a name including our process KOID so it's easy to spot. */
- char VmoName[ZX_MAX_NAME_LEN];
- snprintf(VmoName, sizeof(VmoName), "%s.%" PRIu64, ProfileSinkName,
- Info.koid);
- _zx_object_set_property(__llvm_profile_vmo, ZX_PROP_NAME, VmoName,
- strlen(VmoName));
-
- /* Duplicate the handle since __sanitizer_publish_data consumes it. */
- zx_handle_t Handle;
- Status =
- _zx_handle_duplicate(__llvm_profile_vmo, ZX_RIGHT_SAME_RIGHTS, &Handle);
- if (Status != ZX_OK)
- return -1;
-
- /* Publish the VMO which contains profile data to the system. */
- __sanitizer_publish_data(ProfileSinkName, Handle);
-
- /* Use the dumpfile symbolizer markup element to write the name of VMO. */
- lprofWrite("LLVM Profile: {{{dumpfile:%s:%s}}}\n",
- ProfileSinkName, VmoName);
+static void createVMO() {
+ /* Don't create VMO if it has been alread created. */
+ if (__llvm_profile_vmo != ZX_HANDLE_INVALID)
+ return;
+
+ /* Get information about the current process. */
+ zx_info_handle_basic_t Info;
+ zx_status_t Status =
+ _zx_object_get_info(_zx_process_self(), ZX_INFO_HANDLE_BASIC, &Info,
+ sizeof(Info), NULL, NULL);
+ if (Status != ZX_OK) {
+ lprofWrite("LLVM Profile: cannot get info about current process: %s\n",
+ _zx_status_get_string(Status));
+ return;
}
+ /* Create VMO to hold the profile data. */
+ Status = _zx_vmo_create(0, ZX_VMO_RESIZABLE, &__llvm_profile_vmo);
+ if (Status != ZX_OK) {
+ lprofWrite("LLVM Profile: cannot create VMO: %s\n",
+ _zx_status_get_string(Status));
+ return;
+ }
+
+ /* Give the VMO a name including our process KOID so it's easy to spot. */
+ char VmoName[ZX_MAX_NAME_LEN];
+ snprintf(VmoName, sizeof(VmoName), "%s.%" PRIu64, ProfileSinkName, Info.koid);
+ _zx_object_set_property(__llvm_profile_vmo, ZX_PROP_NAME, VmoName,
+ strlen(VmoName));
+
+ /* Duplicate the handle since __sanitizer_publish_data consumes it. */
+ zx_handle_t Handle;
+ Status =
+ _zx_handle_duplicate(__llvm_profile_vmo, ZX_RIGHT_SAME_RIGHTS, &Handle);
+ if (Status != ZX_OK) {
+ lprofWrite("LLVM Profile: cannot duplicate VMO handle: %s\n",
+ _zx_status_get_string(Status));
+ _zx_handle_close(__llvm_profile_vmo);
+ __llvm_profile_vmo = ZX_HANDLE_INVALID;
+ return;
+ }
+
+ /* Publish the VMO which contains profile data to the system. */
+ __sanitizer_publish_data(ProfileSinkName, Handle);
+
+ /* Use the dumpfile symbolizer markup element to write the name of VMO. */
+ lprofWrite("LLVM Profile: {{{dumpfile:%s:%s}}}\n", ProfileSinkName, VmoName);
+}
+
+static uint32_t lprofVMOWriter(ProfDataWriter *This, ProfDataIOVec *IOVecs,
+ uint32_t NumIOVecs) {
/* Compute the total length of data to be written. */
size_t Length = 0;
for (uint32_t I = 0; I < NumIOVecs; I++)
@@ -129,13 +142,13 @@ static void initVMOWriter(ProfDataWriter *This) {
static int dump(void) {
if (lprofProfileDumped()) {
- lprofWrite("Profile data not published: already written.\n");
+ lprofWrite("LLVM Profile: data not published: already written.\n");
return 0;
}
/* Check if there is llvm/runtime version mismatch. */
if (GET_VERSION(__llvm_profile_get_version()) != INSTR_PROF_RAW_VERSION) {
- lprofWrite("Runtime and instrumentation version mismatch : "
+ lprofWrite("LLVM Profile: runtime and instrumentation version mismatch: "
"expected %d, but got %d\n",
INSTR_PROF_RAW_VERSION,
(int)GET_VERSION(__llvm_profile_get_version()));
@@ -164,7 +177,7 @@ static void dumpWithoutReturn(void) { dump(); }
* InstrProfilingRuntime.o if it is linked in.
*/
COMPILER_RT_VISIBILITY
-void __llvm_profile_initialize_file(void) {}
+void __llvm_profile_initialize_file(void) { createVMO(); }
COMPILER_RT_VISIBILITY
int __llvm_profile_register_write_file_atexit(void) {