From 49abf162fa91397b0c65d41f5c9af31ace4e6290 Mon Sep 17 00:00:00 2001
From: fche <fche>
Date: Thu, 28 Feb 2008 21:34:46 +0000
Subject: PR5045: clean up after interrupts

2008-02-28  Frank Ch. Eigler  <fche@elastic.org>

	PR5045
	* session.h (pending_interrupts): New global.
	* main.cxx (handle_interrupts): New fn to handle SIGINT* etc.
	* elaborate.cxx, translate.cxx, tapsets.cxx, main.cxx (*): Insert
	pending_interrupts escape hatches inside potentially timetaking loops.
	* buildrun.cxx: Don't deal with signals.
---
 tapsets.cxx | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'tapsets.cxx')

diff --git a/tapsets.cxx b/tapsets.cxx
index c5ed6ea1..52c14024 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -827,6 +827,7 @@ struct dwflpp
         ptrdiff_t off = 0;
         do
           {
+            if (pending_interrupts) return;
             off = dwfl_getmodules (dwfl, module_caching_callback,
                                    & module_cache, off);
           }
@@ -837,6 +838,7 @@ struct dwflpp
     // Traverse the cache.
     for (unsigned i = 0; i < module_cache.size(); i++)
       {
+        if (pending_interrupts) return;
         module_cache_entry& it = module_cache[i];
         int rc = callback (it.mod, 0, it.name, it.addr, data);
         if (rc != DWARF_CB_OK) break;
@@ -868,6 +870,7 @@ struct dwflpp
         Dwarf_Off noff;
         while (dwarf_nextcu (dw, off, &noff, &cuhl, NULL, NULL, NULL) == 0)
           {
+            if (pending_interrupts) return;
             Dwarf_Die die_mem;
             Dwarf_Die *die;
             die = dwarf_offdie (dw, off + cuhl, &die_mem);
@@ -878,6 +881,7 @@ struct dwflpp
 
     for (unsigned i = 0; i < v->size(); i++)
       {
+        if (pending_interrupts) return;
         Dwarf_Die die = v->at(i);
         int rc = (*callback)(& die, data);
         if (rc != DWARF_CB_OK) break;
@@ -1057,6 +1061,7 @@ struct dwflpp
       {
 	for (size_t i = 0; i < nsrcs; ++i)
 	  {
+            if (pending_interrupts) return;
             if (srcsp [i]) // skip over mismatched lines
               callback (srcsp[i], data);
 	  }
@@ -3012,6 +3017,7 @@ static int
 query_cu (Dwarf_Die * cudie, void * arg)
 {
   dwarf_query * q = static_cast<dwarf_query *>(arg);
+  if (pending_interrupts) return DWARF_CB_ABORT;
 
   try
     {
-- 
cgit