Merge branch 'runtime_select_event_loop' of github.com:awslabs/aws-c-…

…io into grand_dispatch_queue

CMakeLists.txt

@@ -74,7 +74,7 @@ if (WIN32)
                 )
          list(APPEND AWS_IO_OS_SRC ${AWS_IO_IOCP_SRC})
 
-         set(EVENT_LOOP_DEFINE "IO_COMPLETION_PORTS")
+         list(APPEND EVENT_LOOP_DEFINES "IO_COMPLETION_PORTS")
     endif ()
 
     if (MSVC)
@@ -101,7 +101,7 @@ elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Androi
             )
     set(PLATFORM_LIBS "")
 
-    set(EVENT_LOOP_DEFINE "EPOLL")
+    list(APPEND EVENT_LOOP_DEFINES "EPOLL")
     set(USE_S2N ON)
 
 elseif (APPLE)
@@ -125,7 +125,7 @@ elseif (APPLE)
 
     #No choice on TLS for apple, darwinssl will always be used.
     list(APPEND PLATFORM_LIBS "-framework Security -framework Network")
-    set(EVENT_LOOP_DEFINES "DISPATCH_QUEUE" )
+    list(APPEND EVENT_LOOP_DEFINES "DISPATCH_QUEUE")
 
     # Enable KQUEUE on MacOS 
     if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
@@ -134,7 +134,7 @@ elseif (APPLE)
             "source/posix/*.c"
         )
         list(APPEND AWS_IO_OS_SRC ${AWS_IO_KUEUE_SRC})
-        set(EVENT_LOOP_DEFINE "KQUEUE")
+        list(APPEND EVENT_LOOP_DEFINES "KQUEUE")
     endif()
 
 elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "NetBSD" OR CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
@@ -146,7 +146,7 @@ elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "NetB
             "source/posix/*.c"
             )
 
-    set(EVENT_LOOP_DEFINE "KQUEUE")
+    list(APPEND EVENT_LOOP_DEFINES "KQUEUE")
     set(USE_S2N ON)
 
 endif()
@@ -199,7 +199,9 @@ aws_add_sanitizers(${PROJECT_NAME})
 # We are not ABI stable yet
 set_target_properties(${PROJECT_NAME} PROPERTIES VERSION 1.0.0)
 
-target_compile_definitions(${PROJECT_NAME} PUBLIC "-DAWS_ENABLE_${EVENT_LOOP_DEFINE}")
+foreach(EVENT_LOOP_DEFINE IN LISTS EVENT_LOOP_DEFINES)
+    target_compile_definitions(${PROJECT_NAME} PUBLIC "-DAWS_ENABLE_${EVENT_LOOP_DEFINE}")
+endforeach()
 
 if (BYO_CRYPTO)
     target_compile_definitions(${PROJECT_NAME} PUBLIC "-DBYO_CRYPTO")

source/event_loop.c

@@ -618,7 +618,6 @@ static int aws_event_loop_type_validate_platform(enum aws_event_loop_type type)
     return AWS_OP_SUCCESS;
 }
 
-#ifndef AWS_ENABLE_DISPATCH_QUEUE
 struct aws_event_loop *aws_event_loop_new_dispatch_queue_with_options(
     struct aws_allocator *alloc,
     const struct aws_event_loop_options *options) {
@@ -629,7 +628,6 @@ struct aws_event_loop *aws_event_loop_new_dispatch_queue_with_options(
     AWS_LOGF_DEBUG(AWS_LS_IO_EVENT_LOOP, "Dispatch Queue is not supported on the platform");
     return NULL;
 }
-#endif // AWS_ENABLE_DISPATCH_QUEUE
 
 #ifndef AWS_ENABLE_IO_COMPLETION_PORTS
 struct aws_event_loop *aws_event_loop_new_iocp_with_options(