Changeset 76e069f for libcfa/src/concurrency/invoke.c

Timestamp:

Jan 11, 2019, 10:54:41 AM (3 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

aaron-thesis, arm-eh, cleanup-dtors, deferred_resn, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, no_list, persistent-indexer

Children:

456834b

Parents:

f23b685

Message:

Implemented stack unwinding on coroutine termination

File:

• libcfa/src/concurrency/invoke.c (modified) (2 diffs)

libcfa/src/concurrency/invoke.c

@@ -17 +17 @@
 #include <stdlib.h>
 #include <stdio.h>
+#include <unwind.h>
 
 #include "invoke.h"
@@ -53 +54 @@
         __leave_coroutine();
         __cabi_abort( "Resumed dead coroutine" );
+}
+
+static _Unwind_Reason_Code _CtxCoroutine_UnwindStop(
+        __attribute((__unused__)) int version,
+        _Unwind_Action actions,
+        __attribute((__unused__)) _Unwind_Exception_Class exceptionClass,
+        __attribute((__unused__)) struct _Unwind_Exception * unwind_exception,
+        __attribute((__unused__)) struct _Unwind_Context * context,
+        __attribute((__unused__)) void * param
+) {
+        if( actions & _UA_END_OF_STACK  ) {
+                // We finished unwinding the coroutine,
+                // leave it
+                __leave_coroutine();
+                __cabi_abort( "Resumed dead coroutine" );
+        }
+        if( actions & _UA_CLEANUP_PHASE ) return _URC_NO_REASON;
+
+        return _URC_FATAL_PHASE2_ERROR;
+}
+
+void _CtxCoroutine_Unwind(struct _Unwind_Exception * storage) __attribute__ ((__noreturn__));
+void _CtxCoroutine_Unwind(struct _Unwind_Exception * storage) {
+        _Unwind_Reason_Code ret = _Unwind_ForcedUnwind( storage, _CtxCoroutine_UnwindStop, NULL );
+        printf("UNWIND ERROR %d after force unwind\n", ret);
+        abort();
 }