diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/xray/xray_interface.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/xray/xray_interface.h b/include/xray/xray_interface.h index 680fcfdd5..9e712b1fa 100644 --- a/include/xray/xray_interface.h +++ b/include/xray/xray_interface.h @@ -32,6 +32,13 @@ enum XRayEntryType { ENTRY = 0, EXIT = 1, TAIL = 2 }; // (function entry, function exit, etc.). See the enum // XRayEntryType for more details. // +// The user handler must handle correctly spurious calls after this handler is +// removed or replaced with another handler, because it would be too costly for +// XRay runtime to avoid spurious calls. +// To prevent circular calling, the handler function itself and all its +// direct&indirect callees must not be instrumented with XRay, which can be +// achieved by marking them all with: __attribute__((xray_never_instrument)) +// // Returns 1 on success, 0 on error. extern int __xray_set_handler(void (*entry)(int32_t, XRayEntryType)); |