1/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
3#ident "$Id$"
4/*======
5This file is part of PerconaFT.
6
7
8Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
9
10 PerconaFT is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License, version 2,
12 as published by the Free Software Foundation.
13
14 PerconaFT is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
21
22----------------------------------------
23
24 PerconaFT is free software: you can redistribute it and/or modify
25 it under the terms of the GNU Affero General Public License, version 3,
26 as published by the Free Software Foundation.
27
28 PerconaFT is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 GNU Affero General Public License for more details.
32
33 You should have received a copy of the GNU Affero General Public License
34 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
35======= */
36
37#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
38
39#pragma once
40
41#include <dirent.h>
42#include <sys/time.h>
43
44#include "toku_stdint.h"
45#include "toku_os_types.h"
46
47// Returns: the current process id
48int toku_os_getpid(void) __attribute__((__visibility__("default")));
49
50// Returns: the current thread id
51int toku_os_gettid(void) __attribute__((__visibility__("default")));
52
53// Returns: the number of processors in the system
54int toku_os_get_number_processors(void);
55
56// Returns: the number of active processors in the system
57int toku_os_get_number_active_processors(void);
58
59// Returns: the system page size (in bytes)
60int toku_os_get_pagesize(void);
61
62// Returns: the size of physical memory (in bytes)
63uint64_t toku_os_get_phys_memory_size(void) __attribute__((__visibility__("default")));
64
65// Returns the processor frequency in Hz
66// Returns 0 if success
67int toku_os_get_processor_frequency(uint64_t *hz);
68
69// Returns: 0 on success
70// sets fsize to the number of bytes in a file
71int toku_os_get_file_size(int fildes, int64_t *fsize) __attribute__((__visibility__("default")));
72
73// Returns: 0 on success
74// Initializes id as a unique fileid for fildes on success.
75int toku_os_get_unique_file_id(int fildes, struct fileid *id);
76
77//Locks a file (should not be open to begin with).
78//Returns: file descriptor (or -1 on error)
79int toku_os_lock_file(const char *name);
80
81//Unlocks and closes a file locked by toku_os_lock_on_file
82int toku_os_unlock_file(int fildes);
83
84int toku_os_mkdir(const char *pathname, mode_t mode) __attribute__((__visibility__("default")));
85
86// Get the current process user and kernel use times
87int toku_os_get_process_times(struct timeval *usertime, struct timeval *kerneltime);
88
89// Get the maximum size of the process data size (in bytes)
90// Success: returns 0 and sets *maxdata to the data size
91// Fail: returns an error number
92int toku_os_get_max_process_data_size(uint64_t *maxdata) __attribute__((__visibility__("default")));
93
94int toku_os_initialize_settings(int verbosity) __attribute__((__visibility__("default")));
95
96bool toku_os_is_absolute_name(const char* path) __attribute__((__visibility__("default")));
97
98// Return true if huge pages are enabled. See portability/huge_page_detection.cc for methodology.
99bool toku_os_huge_pages_enabled(void) __attribute__((__visibility__("default")));
100
101// Set whether or not writes assert when ENOSPC is returned or they wait for space
102void toku_set_assert_on_write_enospc(int do_assert) __attribute__((__visibility__("default")));
103
104// Get file system write information
105// *enospc_last_time is the last time ENOSPC was returned by write or pwrite
106// *enospc_current is the number of threads waiting on space
107// *enospc_total is the number of times ENOSPC was returned by write or pwrite
108void toku_fs_get_write_info(time_t *enospc_last_time, uint64_t *enospc_current, uint64_t *enospc_total);
109
110void toku_fsync_dirfd_without_accounting(DIR *dirp);
111
112int toku_fsync_dir_by_name_without_accounting(const char *dir_name);
113
114// Get the file system free and total space for the file system that contains a path name
115// *avail_size is set to the bytes of free space in the file system available for non-root
116// *free_size is set to the bytes of free space in the file system
117// *total_size is set to the total bytes in the file system
118// Return 0 on success, otherwise an error number
119int toku_get_filesystem_sizes(const char *path,
120 uint64_t *avail_size,
121 uint64_t *free_size,
122 uint64_t *total_size);
123
124// Portable linux 'dup2'
125int toku_dup2(int fd, int fd2) __attribute__((__visibility__("default")));
126