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Unified Diff: include/v8.h

Issue 2371833007: [wasm] Initial signal handler (Closed)
Patch Set: Make sure guard pages get set up when resizing from 0 to more than 0 Created 3 years, 9 months ago
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Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index f012b3bdd1a6137ea8db88d783781590296060f1..ab85ed5ca06fc4b004f5f92973e48178ee0a8304 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -7633,6 +7633,35 @@ class V8_EXPORT V8 {
*/
static void ShutdownPlatform();
+#if V8_OS_LINUX && V8_TARGET_ARCH_X64
+ /**
+ * Give the V8 signal handler a chance to handle a fault.
+ *
+ * This function determines whether a memory access violation can be recovered
+ * by V8. If so, it will return true and modify context to return to a code
+ * fragment that can recover from the fault. Otherwise, TryHandleSignal will
+ * return false.
+ *
+ * The parameters to this function correspond to those passed to a Linux
+ * signal handler.
+ *
+ * \param signal_number The signal number.
+ *
+ * \param info A pointer to the siginfo_t structure provided to the signal
+ * handler.
+ *
+ * \param context The third argument passed to the Linux signal handler, which
+ * points to a ucontext_t structure.
+ */
+ static bool TryHandleSignal(int signal_number, void* info, void* context);
+#endif // V8_OS_LINUX
+
+ /**
+ * Enable the default signal handler rather than using one provided by the
+ * embedder.
+ */
+ static bool RegisterDefaultSignalHandler();
+
private:
V8();
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