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drivers/serial/tcdrain: tcdrain() was recently added to the NuttX C library. But there is a problem. The specification of tcdrain() requires that it be a cancellation point. In order to do this, tcdrain was moved from the C library into the OS and the addition cancellation point hooks were added. In non-FLAT builds, access via system calls is also now supported.

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Gregory Nutt
2017-10-06 10:55:36 -06:00
parent 936df1bcb5
commit 5b04c25dcd
12 changed files with 61 additions and 43 deletions
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syscall/syscall.csv
+1
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@@ -153,6 +153,7 @@
"task_setcancelstate","sched.h","","int","int","FAR int*"
"task_setcanceltype","sched.h","defined(CONFIG_CANCELLATION_POINTS)","int","int","FAR int*"
"task_testcancel","pthread.h","defined(CONFIG_CANCELLATION_POINTS)","void"
"tcdrain","termios.h","defined(CONFIG_SERIAL_TERMIOS)","int","int"
"telldir","dirent.h","CONFIG_NFILE_DESCRIPTORS > 0","off_t","FAR DIR*"
"timer_create","time.h","!defined(CONFIG_DISABLE_POSIX_TIMERS)","int","clockid_t","FAR struct sigevent*","FAR timer_t*"
"timer_delete","time.h","!defined(CONFIG_DISABLE_POSIX_TIMERS)","int","timer_t"
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