WIP: Add jit_stack_size option

Author: alubbe

src/ngx_http_lua_regex.c

@@ -363,6 +363,7 @@ ngx_http_lua_ngx_re_match_helper(lua_State *L, int wantcaps)
         old_pool = ngx_http_lua_pcre_malloc_init(pool);
 
         sd = pcre_study(re_comp.regex, PCRE_STUDY_JIT_COMPILE, &msg);
+        pcre_assign_jit_stack(sd, NULL, jit_stack); // reuse the same jit_stack for all regexs
 
         ngx_http_lua_pcre_malloc_done(old_pool);
 
@@ -825,6 +826,7 @@ ngx_http_lua_ngx_re_gmatch(lua_State *L)
         old_pool = ngx_http_lua_pcre_malloc_init(pool);
 
         sd = pcre_study(re_comp.regex, PCRE_STUDY_JIT_COMPILE, &msg);
+        pcre_assign_jit_stack(sd, NULL, jit_stack); // reuse the same jit_stack for all regexs
 
         ngx_http_lua_pcre_malloc_done(old_pool);