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Diffstat (limited to 'gprofng/libcollector/tsd.h')
-rw-r--r-- | gprofng/libcollector/tsd.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gprofng/libcollector/tsd.h b/gprofng/libcollector/tsd.h new file mode 100644 index 0000000..38b3d53 --- /dev/null +++ b/gprofng/libcollector/tsd.h @@ -0,0 +1,80 @@ +/* Copyright (C) 2021 Free Software Foundation, Inc. + Contributed by Oracle. + + This file is part of GNU Binutils. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +/* Thread-specific data */ + +#ifndef _TSD_H +#define _TSD_H + +#include <sys/types.h> + +int __collector_tsd_init (); +/* Function: Init tsd module. Call once before using other functions. + MT-Level: Unsafe + Return: 0 if successful + */ + +void __collector_tsd_fini (); +/* Function: Shutdown tsd module. + MT-Level: Unsafe + Return: None + */ + +void __collector_tsd_fork_child_cleanup (); +/* Function: Reset tsd module. Call immediately after fork() in child process. + MT-Level: Unsafe + Return: None + */ + +int __collector_tsd_allocate (); +/* Function: Allocate thread info. + Call from threads before using tsd_get_by_key(). + Call from main thread should be made before calls from other threads. + MT-Level: First call is unsafe. Safe afterwards. + Return: 0 if successful + */ + +void __collector_tsd_release (); +/* Function: Free thread info. + Call from threads just before thread termination. + MT-Level: Safe + Return: None + */ + +#define COLLECTOR_TSD_INVALID_KEY ((unsigned)-1) +unsigned __collector_tsd_create_key (size_t memsize, void (*init)(void*), void (*fini)(void*)); +/* Function: Reserve TDS memory. + MT-Level: Unsafe + Inputs: <memsize>: number of bytes to reserve + <init>: key memory initialization. Must be callable even if + the associated thread has not yet been created. + <fini>: key memory finalization. Must be callable even if + the associated thread has been terminated. + Return: key or COLLECTOR_TSD_INVALID_KEY if not successful. + */ + +void *__collector_tsd_get_by_key (unsigned key); +/* Function: Get TSD memory. + Call from threads after calling tsd_allocate(). + MT-Level: Safe + Inputs: <key>: return value from tsd_create_key() + Return: memory if successful, NULL otherwise + */ +#endif /* _TSD_H */ |