From 0f547edbd76814f7a8299f5e1647cd0816276ba8 Mon Sep 17 00:00:00 2001
From: Peter Mikkelsen <peter@pmikkelsen.com>
Date: Wed, 23 Feb 2022 11:44:40 +0000
Subject: Add seperate error handlers in threads

---
 apl9.h        |  1 +
 concurrency.c | 15 ++++++++++++---
 error.c       |  9 ++++-----
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/apl9.h b/apl9.h
index 51cebfb..e56014b 100644
--- a/apl9.h
+++ b/apl9.h
@@ -237,6 +237,7 @@ struct ThreadData
 	Mail *lastmail;
 	int lasterror;
 	Rune *lasterrormsg;
+	ErrorGuard *globalerrorguard;
 	QLock lock;
 	Rendez empty;
 };
diff --git a/concurrency.c b/concurrency.c
index d04876d..81ff7b1 100644
--- a/concurrency.c
+++ b/concurrency.c
@@ -117,9 +117,18 @@ newprocfn(void *data)
 	ThreadData *td = newthreaddata();
 	void **tdptr = threaddata();
 	*tdptr = td;
-	int done = 1;
-	send(sp->setupdone, &done);
-	runfunc(sp->func, sp->left, sp->right);
+	ErrorGuard *eg = newerrorguard(mkscalarint(0), nil); /* make a catch-all error guard */
+	if(setjmp(eg->jmp)){
+		print("Thread %d: %S%S%S\n",
+			threadid(),
+			errorstr(td->lasterror),
+			(td->lasterror && td->lasterrormsg) ? L": " : L"",
+			td->lasterrormsg ? td->lasterrormsg : L"");
+	}else{
+		int done = 1;
+		send(sp->setupdone, &done);
+		runfunc(sp->func, sp->left, sp->right);
+	}
 	lock(&threadlock);
 	/* TODO remove thread */
 	unlock(&threadlock);
diff --git a/error.c b/error.c
index 09f2c32..ee6ffe9 100644
--- a/error.c
+++ b/error.c
@@ -5,18 +5,17 @@
 
 #include "apl9.h"
 
-ErrorGuard *globalerrorguard;
-
 ErrorGuard *
 newerrorguard(Array *codes, Statement *guard)
 {
+	ThreadData *td = getthreaddata();
 	DfnFrame *fr = getcurrentdfn();
 	ErrorGuard *eg = emallocz(sizeof(ErrorGuard), 1);
 	eg->active = 1;
 	eg->guard = guard;
 
 	if(fr == nil)
-		globalerrorguard = eg;
+		td->globalerrorguard = eg;
 	else{
 		eg->next = fr->errorguards;
 		fr->errorguards = eg;
@@ -32,9 +31,9 @@ newerrorguard(Array *codes, Statement *guard)
 void
 throwerror(Rune *msg, int err)
 {
-	ErrorGuard *matching = globalerrorguard;
-	DfnFrame *frame = getcurrentdfn();
 	ThreadData *td = getthreaddata();
+	ErrorGuard *matching = td->globalerrorguard;
+	DfnFrame *frame = getcurrentdfn();
 	td->lasterror = err;
 	if(td->lasterrormsg)
 		free(td->lasterrormsg);
-- 
cgit v1.2.3