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correct handling when a thread turns on line hooks in another thread

This commit is contained in:
Roberto Ierusalimschy 2003-07-07 10:37:56 -03:00
parent 79fee99024
commit f52f357a55
1 changed files with 6 additions and 4 deletions
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10
lvm.c
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@ -1,5 +1,5 @@
/* /*
** $Id: lvm.c,v 1.286 2003/05/13 20:15:59 roberto Exp roberto $ ** $Id: lvm.c,v 1.287 2003/05/14 12:09:12 roberto Exp roberto $
** Lua virtual machine ** Lua virtual machine
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -76,13 +76,15 @@ static void traceexec (lua_State *L) {
if (mask & LUA_MASKLINE) { if (mask & LUA_MASKLINE) {
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
Proto *p = ci_func(ci)->l.p; Proto *p = ci_func(ci)->l.p;
int newline = getline(p, pcRel(*ci->u.l.pc, p)); int pc = pcRel(*ci->u.l.pc, p);
int newline = getline(p, pc);
if (!L->hookinit) { if (!L->hookinit) {
luaG_inithooks(L); luaG_inithooks(L);
return; if (pc != 0) /* not function start? */
return; /* begin tracing on next line */
} }
lua_assert(ci->state & CI_HASFRAME); lua_assert(ci->state & CI_HASFRAME);
if (pcRel(*ci->u.l.pc, p) == 0) /* tracing may be starting now? */ if (pc == 0) /* function may be starting now? */
ci->u.l.savedpc = *ci->u.l.pc; /* initialize `savedpc' */ ci->u.l.savedpc = *ci->u.l.pc; /* initialize `savedpc' */
/* calls linehook when enters a new line or jumps back (loop) */ /* calls linehook when enters a new line or jumps back (loop) */
if (*ci->u.l.pc <= ci->u.l.savedpc || if (*ci->u.l.pc <= ci->u.l.savedpc ||