ruby-changes:24278
From: nobu <ko1@a...>
Date: Fri, 6 Jul 2012 12:25:01 +0900 (JST)
Subject: [ruby-changes:24278] nobu:r36329 (trunk): ThreadShield: check waiting count
nobu 2012-07-06 12:24:41 +0900 (Fri, 06 Jul 2012) New Revision: 36329 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=36329 Log: ThreadShield: check waiting count * thread.c (rb_thread_shield_waiting_{inc,dec}): check waiting count. Modified files: trunk/thread.c Index: thread.c =================================================================== --- thread.c (revision 36328) +++ thread.c (revision 36329) @@ -3723,19 +3723,28 @@ #define THREAD_SHIELD_WAITING_MASK (FL_USER0|FL_USER1|FL_USER2|FL_USER3|FL_USER4|FL_USER5|FL_USER6|FL_USER7|FL_USER8|FL_USER9|FL_USER10|FL_USER11|FL_USER12|FL_USER13|FL_USER14|FL_USER15|FL_USER16|FL_USER17|FL_USER18|FL_USER19) #define THREAD_SHIELD_WAITING_SHIFT (FL_USHIFT) #define rb_thread_shield_waiting(b) (int)((RBASIC(b)->flags&THREAD_SHIELD_WAITING_MASK)>>THREAD_SHIELD_WAITING_SHIFT) -#define rb_thread_shield_waiting_inc(b) do { \ - int w = rb_thread_shield_waiting(b); \ - w++; \ - RBASIC(b)->flags &= ~THREAD_SHIELD_WAITING_MASK; \ - RBASIC(b)->flags |= ((VALUE)w << THREAD_SHIELD_WAITING_SHIFT); \ -} while (0) -#define rb_thread_shield_waiting_dec(b) do { \ - int w = rb_thread_shield_waiting(b); \ - w--; \ - RBASIC(b)->flags &= ~THREAD_SHIELD_WAITING_MASK; \ - RBASIC(b)->flags |= ((VALUE)w << THREAD_SHIELD_WAITING_SHIFT); \ -} while (0) +static inline void +rb_thread_shield_waiting_inc(VALUE b) +{ + int w = rb_thread_shield_waiting(b); + w++; + if (w > (THREAD_SHIELD_WAITING_MASK>>THREAD_SHIELD_WAITING_SHIFT)) + rb_raise(rb_eRuntimeError, "waiting count overflow"); + RBASIC(b)->flags &= ~THREAD_SHIELD_WAITING_MASK; + RBASIC(b)->flags |= ((VALUE)w << THREAD_SHIELD_WAITING_SHIFT); +} + +static inline void +rb_thread_shield_waiting_dec(VALUE b) +{ + int w = rb_thread_shield_waiting(b); + if (!w) rb_raise(rb_eRuntimeError, "waiting count underflow"); + w--; + RBASIC(b)->flags &= ~THREAD_SHIELD_WAITING_MASK; + RBASIC(b)->flags |= ((VALUE)w << THREAD_SHIELD_WAITING_SHIFT); +} + VALUE rb_thread_shield_new(void) { -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/