Refine perf stat

trunk/3rdparty/st-srs/README.md

@@ -22,6 +22,8 @@ The branch [srs](https://github.com/ossrs/state-threads/tree/srs) will be patche
 - [x] Patch [st.osx10.14.build.patch](https://github.com/ossrs/srs/blob/2.0release/trunk/3rdparty/patches/6.st.osx10.14.build.patch), for osx 10.14 build.
 - [x] Support macro `MD_ST_NO_ASM` to disable ASM, [#8](https://github.com/ossrs/state-threads/issues/8).
 - [x] Merge patch [srs#1282](https://github.com/ossrs/srs/issues/1282#issuecomment-445539513) to support aarch64, [#9](https://github.com/ossrs/state-threads/issues/9).
+- [x] Support OSX for Apple Darwin, macOS, [#11](https://github.com/ossrs/state-threads/issues/11).
+- [x] Support sendmmsg for UDP, [#12](https://github.com/ossrs/state-threads/issues/12).
 
 ## Docs
 
@@ -85,4 +87,10 @@ Important cli options:
 1. `--track-origins=<yes|no> [default: no]`, Controls whether Memcheck tracks the origin of uninitialised values. By default, it does not, which means that although it can tell you that an uninitialised value is being used in a dangerous way, it cannot tell you where the uninitialised value came from. This often makes it difficult to track down the root problem.
 1. `--show-reachable=<yes|no> , --show-possibly-lost=<yes|no>`, to show the using memory.
 
+## Analysis
+
+1. About setjmp and longjmp, read [setjmp](https://gitee.com/winlinvip/srs-wiki/raw/master/images/st-setjmp.jpg).
+1. About the stack structure, read [stack](https://gitee.com/winlinvip/srs-wiki/raw/master/images/st-stack.jpg)
+1. About asm code comments, read [#91d530e](https://github.com/ossrs/state-threads/commit/91d530e#diff-ed9428b14ff6afda0e9ab04cc91d4445R25).
+
 Winlin 2016