multithreaded service
This adds support for multithreaded service to lws without adding any
threading or locking code in the library.
At context creation time you can request split the service part of the
context into n service domains, which are load-balanced so that the most
idle one gets the next listen socket accept.
There's a single listen socket on one port still.
User code may then spawn n threads doing n service loops / poll()s
simultaneously. Locking is only required (I think) in the existing
FD lock callbacks already handled by the pthreads server example,
and that locking takes place in user code. So the library remains
completely agnostic about the threading / locking scheme.
And by default, it's completely compatible with one service thread
so no changes are required by people uninterested in multithreaded
service.
However for people interested in extremely lightweight mass http[s]/
ws[s] service with minimum provisioning, the library can now do
everything out of the box.
To test it, just try
$ libwebsockets-test-server-pthreads -j 8
where -j controls the number of service threads
Signed-off-by: Andy Green <andy.green@linaro.org>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 61468b0..adb563b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,7 +76,6 @@
option(LWS_MBED3 "Platform is MBED3" OFF)
option(LWS_SSL_SERVER_WITH_ECDH_CERT "Include SSL server use ECDH certificate" OFF)
-
if (DEFINED YOTTA_WEBSOCKETS_VERSION_STRING)
set(LWS_WITH_SHARED OFF)
@@ -86,18 +85,7 @@
set(LWS_WITHOUT_TESTAPPS ON)
set(LWS_WITHOUT_EXTENSIONS ON)
set(LWS_MBED3 ON)
-
-endif()
-
-if (DEFINED YOTTA_WEBSOCKETS_VERSION_STRING)
-
-set(LWS_WITH_SHARED OFF)
-set(LWS_WITH_SSL OFF)
-set(LWS_WITH_ZLIB OFF)
-set(LWS_WITHOUT_CLIENT ON)
-set(LWS_WITHOUT_TESTAPPS ON)
-set(LWS_WITHOUT_EXTENSIONS ON)
-set(LWS_MBED3 ON)
+set(LWS_MAX_SMP 1)
endif()
@@ -247,6 +235,10 @@
set(LWS_USE_HTTP2 1)
endif()
+if ("${LWS_MAX_SMP}" STREQUAL "")
+ set(LWS_MAX_SMP 32)
+endif()
+
#if (LWS_MBED3)
# set(CMAKE_C_FLAGS "-D_DEBUG ${CMAKE_C_FLAGS}")
#endif()
@@ -1140,6 +1132,7 @@
message(" LWS_WITH_HTTP2 = ${LWS_WITH_HTTP2}")
message(" LWS_MBED3 = ${LWS_MBED3}")
message(" LWS_SSL_SERVER_WITH_ECDH_CERT = ${LWS_SSL_SERVER_WITH_ECDH_CERT}")
+message(" LWS_MAX_SMP = ${LWS_MAX_SMP}")
message("---------------------------------------------------------------------")
# These will be available to parent projects including libwebsockets using add_subdirectory()