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2d986310f1
If there is a zero timeout and MSG_DONTWAIT is available (or the
socket is non-blocking), the poll() call is not necessary, and we can
just call recv() right away.
Before this change:
poll([{fd=4, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, 0) = 0 (Timeout)
poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 60000) = 1 ([{fd=4, revents=POLLIN}])
recvfrom(4, "HTTP/1.1 301 Moved Permanently\r\n"..., 8192, MSG_DONTWAIT, NULL, NULL) = 348
poll([{fd=4, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, 0) = 1 ([{fd=4, revents=POLLIN}])
recvfrom(4, "", 1, MSG_PEEK, NULL, NULL) = 0
After this change:
recvfrom(4, 0x7ffe0cc719a0, 1, MSG_PEEK|MSG_DONTWAIT, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 60000) = 1 ([{fd=4, revents=POLLIN}])
recvfrom(4, "HTTP/1.1 301 Moved Permanently\r\n"..., 8192, MSG_DONTWAIT, NULL, NULL) = 348
recvfrom(4, "", 1, MSG_PEEK|MSG_DONTWAIT, NULL, NULL) = 0
The first poll() is replaced by recvfrom(), and the third poll() is
omitted completely.
ext/openssl/xp_ssl: eliminate poll() when MSG_DONTWAIT is available
If there is a zero timeout and MSG_DONTWAIT is available (or the
socket is non-blocking), the poll() call is not necessary, and we can
just call recv() right away.
Closes GH-8092.
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| .. | ||
| streams | ||
| build-defs.h.in | ||
| explicit_bzero.c | ||
| fastcgi.c | ||
| fastcgi.h | ||
| fopen_wrappers.c | ||
| fopen_wrappers.h | ||
| getopt.c | ||
| http_status_codes.h | ||
| internal_functions_win32.c | ||
| internal_functions.c.in | ||
| main.c | ||
| network.c | ||
| output.c | ||
| php_compat.h | ||
| php_content_types.c | ||
| php_content_types.h | ||
| php_getopt.h | ||
| php_globals.h | ||
| php_ini_builder.c | ||
| php_ini_builder.h | ||
| php_ini.c | ||
| php_ini.h | ||
| php_main.h | ||
| php_memory_streams.h | ||
| php_network.h | ||
| php_odbc_utils.c | ||
| php_odbc_utils.h | ||
| php_open_temporary_file.c | ||
| php_open_temporary_file.h | ||
| php_output.h | ||
| php_reentrancy.h | ||
| php_scandir.c | ||
| php_scandir.h | ||
| php_streams.h | ||
| php_syslog.c | ||
| php_syslog.h | ||
| php_ticks.c | ||
| php_ticks.h | ||
| php_variables.c | ||
| php_variables.h | ||
| php_version.h | ||
| php.h | ||
| reentrancy.c | ||
| rfc1867.c | ||
| rfc1867.h | ||
| SAPI.c | ||
| SAPI.h | ||
| snprintf.c | ||
| snprintf.h | ||
| spprintf.c | ||
| spprintf.h | ||
| strlcat.c | ||
| strlcpy.c | ||