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Commit 8edd909

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Fix GH-12778: Windows IIS FastCGI Spin-Up Performance Slowdown
The issue isn't limited to Windows only, I can also see the slowdown on my Linux machine. The cause of the slowdown is 26e4244. In that commit a locale reset routine was implemented that gets called on startup. The fix from that commit is only necessary when using readline functionality, there are three places that is used: - phpdbg - with readline_cli - readline() php function So we make sure we only reset the locale when one of these is used, preventing the overhead on normal website-serving use-cases.
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4 files changed

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lines changed

4 files changed

+15
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‎ext/readline/readline.c

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@@ -115,6 +115,15 @@ PHP_MINFO_FUNCTION(readline)
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/* }}} */
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static void php_readline_fix_locale() {
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/* Yes, this variable is process-wide, but so is the locale setting. */
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static bool locale_fixed = false;
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if (!locale_fixed) {
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locale_fixed = true;
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zend_reset_lc_ctype_locale();
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}
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}
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/* {{{ Reads a line */
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PHP_FUNCTION(readline)
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{
@@ -126,6 +135,8 @@ PHP_FUNCTION(readline)
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RETURN_THROWS();
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}
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php_readline_fix_locale();
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result = readline(prompt);
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if (! result) {

‎ext/readline/readline_cli.c

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@@ -634,6 +634,8 @@ static int readline_shell_run(void) /* {{{ */
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#endif
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read_history(history_file);
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zend_reset_lc_ctype_locale();
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EG(exit_status) = 0;
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while ((line = readline(ZSTR_VAL(prompt))) != NULL) {
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if (strcmp(line, "exit") == 0 || strcmp(line, "quit") == 0) {

‎main/main.c

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@@ -2098,7 +2098,6 @@ zend_result php_module_startup(sapi_module_struct *sf, zend_module_entry *additi
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zuf.getenv_function = sapi_getenv;
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zuf.resolve_path_function = php_resolve_path_for_zend;
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zend_startup(&zuf);
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zend_reset_lc_ctype_locale();
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zend_update_current_locale();
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zend_observer_startup();

‎sapi/phpdbg/phpdbg.c

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@@ -1356,6 +1356,8 @@ int main(int argc, char **argv) /* {{{ */
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PHPDBG_G(flags) = flags;
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if (phpdbg->startup(phpdbg) == SUCCESS) {
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zend_reset_lc_ctype_locale();
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zend_mm_heap *mm_heap;
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#ifdef _WIN32
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EXCEPTION_POINTERS *xp;

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