[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a change in pull request #1009: Add support for preemptive scheduling in simulator build

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xiaoxiang781216 commented on a change in pull request #1009:
URL: https://github.com/apache/incubator-nuttx/pull/1009#discussion_r440822441



##########
File path: arch/sim/include/irq.h
##########
@@ -44,6 +44,10 @@
  * Included Files
  ****************************************************************************/
 
+#ifdef CONFIG_SIM_PREEMPTIBLE
+#  include <ucontext.h>

Review comment:
       Two methods I can imagine:
   1.Call malloc/free function on host side just like you call host timer API
   2.Define an array of sigjmp_buf like this:
   ```
     sigjmp_buf g_jmpbuf[CONFIG_MAX_TASKS];
   ```
   and access it through pid:
   ```
   g_jmpbuf[PIDHASH(pid))]
   ```
   BTW, you don't need save pointer inside xcpcontext.




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