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| author | Roland McGrath <roland@hack.frob.com> | 2014-06-09 12:52:55 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@hack.frob.com> | 2014-06-09 12:52:55 -0700 |
| commit | 962b744d06c1df8653570f32c03da572801e4b6b (patch) | |
| tree | 408556ab7597eba9480e1bd53379681c01c2a55b /nptl/sysdeps/pthread | |
| parent | 2976feab1f37ad7b4e06b253f0a2e844505217da (diff) | |
| download | glibc-962b744d06c1df8653570f32c03da572801e4b6b.zip glibc-962b744d06c1df8653570f32c03da572801e4b6b.tar.gz glibc-962b744d06c1df8653570f32c03da572801e4b6b.tar.bz2 | |
Start cleaning up TLS initial value for pthread_create.
Diffstat (limited to 'nptl/sysdeps/pthread')
| -rw-r--r-- | nptl/sysdeps/pthread/createthread.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/nptl/sysdeps/pthread/createthread.c b/nptl/sysdeps/pthread/createthread.c index e1856f7..28c1ea6 100644 --- a/nptl/sysdeps/pthread/createthread.c +++ b/nptl/sysdeps/pthread/createthread.c @@ -30,10 +30,18 @@ #define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD) -/* Unless otherwise specified, the thread "register" is going to be - initialized with a pointer to the TCB. */ -#ifndef TLS_VALUE -# define TLS_VALUE pd +/* The <tls.h> header should define the macro TLS_DEFINE_INIT_TP such that: + TLS_DEFINE_INIT_TP (VAR, PD); + Declares and initializes a variable VAR with the value that should + be passed to the OS thread creation function (e.g. clone) to initialize + its TLS state for the 'struct pthread *' PD. */ +#ifndef TLS_DEFINE_INIT_TP +/* For a transitional period while all the <tls.h> implementations are + getting updated, we define it using the old TLS_VALUE macro. */ +# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = TLS_VALUE +# ifndef TLS_VALUE +# define TLS_VALUE pd +# endif #endif #ifndef ARCH_CLONE @@ -52,9 +60,7 @@ do_clone (struct pthread *pd, const struct pthread_attr *attr, int clone_flags, int (*fct) (void *), STACK_VARIABLES_PARMS, int stopped) { -#ifdef PREPARE_CREATE - PREPARE_CREATE; -#endif + TLS_DEFINE_INIT_TP (tp, pd); if (__glibc_unlikely (stopped != 0)) /* We make sure the thread does not run far by forcing it to get a @@ -73,7 +79,7 @@ do_clone (struct pthread *pd, const struct pthread_attr *attr, atomic_increment (&__nptl_nthreads); int rc = ARCH_CLONE (fct, STACK_VARIABLES_ARGS, clone_flags, - pd, &pd->tid, TLS_VALUE, &pd->tid); + pd, &pd->tid, tp, &pd->tid); if (__glibc_unlikely (rc == -1)) { |