Weak binding lessens version dependency between ESP8266 and MT library CoopTask. (#6790)

dok-net · devyte · commit cb6b30a47de5 · 2019-11-19T04:43:28.000-03:00
diff --git a/cores/esp8266/core_esp8266_main.cpp b/cores/esp8266/core_esp8266_main.cpp
@@ -100,12 +100,14 @@ static void esp_yield_within_cont() {
         run_scheduled_recurrent_functions();
 }
 
-extern "C" void esp_yield() {
+extern "C" void __esp_yield() {
     if (can_yield()) {
         esp_yield_within_cont();
     }
 }
 
+extern "C" void esp_yield() __attribute__ ((weak, alias("__esp_yield")));
+
 extern "C" void esp_schedule() {
     // always on CONT stack here
     ets_post(LOOP_TASK_PRIORITY, 0, 0);

Original file line number	Diff line number	Diff line change
`@@ -100,12 +100,14 @@ static void esp_yield_within_cont() {`
`100`	`100`	`run_scheduled_recurrent_functions();`
`101`	`101`	`}`
`102`	`102`
`103`		`-extern "C" void esp_yield() {`
	`103`	`+extern "C" void __esp_yield() {`
`104`	`104`	`if (can_yield()) {`
`105`	`105`	`esp_yield_within_cont();`
`106`	`106`	`}`
`107`	`107`	`}`
`108`	`108`
	`109`	`+extern "C" void esp_yield() __attribute__ ((weak, alias("__esp_yield")));`
	`110`	`+`
`109`	`111`	`extern "C" void esp_schedule() {`
`110`	`112`	`// always on CONT stack here`
`111`	`113`	`ets_post(LOOP_TASK_PRIORITY, 0, 0);`