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base: remove Cancelable_lock

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- base/cancelable_lock.h becomes base/lock.h
- all members become private within base/lock.h
- solely Mutex and Blockade are friends to use base/lock.h

Fixes #3819
This commit is contained in:
Alexander Boettcher
2020-07-14 10:15:30 +02:00
committed by Christian Helmuth
parent 0ed7367c97
commit 41380ff769
23 changed files with 108 additions and 209 deletions
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9
repos/base-linux/src/lib/syscall/linux_syscalls.h
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@ -352,6 +352,11 @@ inline int lx_sigaction(int signum, void (*handler)(int), bool altstack)
struct kernel_sigaction act;
act.handler = handler;
/*
* System calls should be restarted on signal occurrence and not return
* with EINTR. We therefore set the SA_RESTART flag in signal handlers.
*/
#ifdef _LP64
/*
* The SA_RESTORER flag is not officially documented, but used internally
@ -360,10 +365,10 @@ inline int lx_sigaction(int signum, void (*handler)(int), bool altstack)
* when leaving the signal handler and it should call the rt_sigreturn syscall.
*/
enum { SA_RESTORER = 0x04000000 };
act.flags = SA_RESTORER;
act.flags = SA_RESTORER | SA_RESTART;
act.restorer = lx_restore_rt;
#else
act.flags = 0;
act.flags = SA_RESTART;
act.restorer = 0;
#endif