ba009e5fd3
skygw_utils.cc: Added function is_valid_posix_path that checks if a path is POSIX-compliant.
205 lines
6.2 KiB
C
205 lines
6.2 KiB
C
#if !defined(SKYGW_UTILS_H)
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#define SKYGW_UTILS_H
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#define MLIST
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#ifndef MIN
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#define MIN(a,b) (a<b ? a : b)
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#endif
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#ifndef MAX
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#define MAX(a,b) (a>b ? a : b)
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#endif
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#define FSYNCLIMIT 10
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#include "skygw_types.h"
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#include "skygw_debug.h"
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#define DISKWRITE_LATENCY (5*MSEC_USEC)
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typedef struct slist_node_st slist_node_t;
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typedef struct slist_st slist_t;
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typedef struct slist_cursor_st slist_cursor_t;
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typedef struct mlist_node_st mlist_node_t;
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typedef struct skygw_file_st skygw_file_t;
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typedef struct skygw_thread_st skygw_thread_t;
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typedef struct skygw_message_st skygw_message_t;
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typedef struct simple_mutex_st {
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skygw_chk_t sm_chk_top;
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pthread_mutex_t sm_mutex;
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pthread_t sm_lock_thr;
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bool sm_locked;
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int sm_enabled; /**< defined as in to minimize mutexing */
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bool sm_flat;
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char* sm_name;
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skygw_chk_t sm_chk_tail;
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} simple_mutex_t;
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typedef struct skygw_rwlock_st {
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skygw_chk_t srw_chk_top;
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pthread_rwlock_t* srw_rwlock;
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pthread_t srw_rwlock_thr;
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skygw_chk_t srw_chk_tail;
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} skygw_rwlock_t;
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typedef struct mlist_st {
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skygw_chk_t mlist_chk_top;
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char* mlist_name;
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void (*mlist_datadel)(void *); /**< clean-up function for data */
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simple_mutex_t mlist_mutex; /**< protect node updates and clean-up */
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bool mlist_uselock;
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bool mlist_islocked;
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bool mlist_deleted;
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size_t mlist_nodecount;
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size_t mlist_nodecount_max; /**< size limit. 0 == no limit */
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size_t mlist_versno;
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bool mlist_flat;
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mlist_node_t* mlist_first;
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mlist_node_t* mlist_last;
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skygw_chk_t mlist_chk_tail;
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} mlist_t;
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typedef struct mlist_cursor_st {
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skygw_chk_t mlcursor_chk_top;
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mlist_t* mlcursor_list;
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mlist_node_t* mlcursor_pos;
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pthread_t* mlcursor_owner_thr;
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skygw_chk_t mlcursor_chk_tail;
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} mlist_cursor_t;
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struct mlist_node_st {
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skygw_chk_t mlnode_chk_top;
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mlist_t* mlnode_list;
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mlist_node_t* mlnode_next;
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void* mlnode_data;
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bool mlnode_deleted;
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skygw_chk_t mlnode_chk_tail;
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};
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typedef enum { THR_INIT, THR_RUNNING, THR_STOPPED, THR_DONE } skygw_thr_state_t;
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typedef enum { MES_RC_FAIL, MES_RC_SUCCESS, MES_RC_TIMEOUT } skygw_mes_rc_t;
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EXTERN_C_BLOCK_BEGIN
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slist_cursor_t* slist_init(void);
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void slist_done(slist_cursor_t* c);
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void slcursor_add_data(slist_cursor_t* c, void* data);
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void* slcursor_get_data(slist_cursor_t* c);
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bool slcursor_move_to_begin(slist_cursor_t* c);
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bool slcursor_step_ahead(slist_cursor_t* c);
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EXTERN_C_BLOCK_END
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mlist_t* mlist_init(mlist_t* mlist,
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mlist_cursor_t** cursor,
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char* name,
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void (*datadel)(void*),
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int maxnodes);
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void mlist_done(mlist_t* list);
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bool mlist_add_data_nomutex(mlist_t* list, void* data);
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bool mlist_add_node_nomutex(mlist_t* list, mlist_node_t* newnode);
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void* mlist_node_get_data(mlist_node_t* node);
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mlist_node_t* mlist_detach_nodes(mlist_t* ml);
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mlist_node_t* mlist_detach_first(mlist_t* ml);
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void mlist_node_done(mlist_node_t* n);
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int mlist_cursor_done(mlist_cursor_t* c);
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mlist_cursor_t* mlist_cursor_init(mlist_t* ml);
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void mlist_cursor_add_data(mlist_cursor_t* c, void* data);
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void* mlist_cursor_get_data_nomutex(mlist_cursor_t* c);
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bool mlist_cursor_move_to_first(mlist_cursor_t* c);
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bool mlist_cursor_step_ahead(mlist_cursor_t* c);
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/** Skygw thread routines */
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skygw_thread_t* skygw_thread_init(
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const char* name,
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void* (*sth_thrfun)(void* data),
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void* data);
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void skygw_thread_done(skygw_thread_t* th);
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int skygw_thread_start(skygw_thread_t* thr);
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skygw_thr_state_t skygw_thread_get_state(skygw_thread_t* thr);
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pthread_t skygw_thread_gettid(skygw_thread_t* thr);
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int get_timestamp_len(void);
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int snprint_timestamp(char* p_ts, int tslen);
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EXTERN_C_BLOCK_BEGIN
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void skygw_thread_set_state(
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skygw_thread_t* thr,
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skygw_thr_state_t state);
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void* skygw_thread_get_data(skygw_thread_t* thr);
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bool skygw_thread_must_exit(skygw_thread_t* thr);
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bool skygw_thread_set_exitflag(
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skygw_thread_t* thr,
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skygw_message_t* sendmes,
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skygw_message_t* recmes);
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EXTERN_C_BLOCK_END
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/** Skygw thread routines */
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/** Skygw file routines */
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skygw_file_t* skygw_file_init(char* fname, char* symlinkname);
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void skygw_file_close(skygw_file_t* file, bool shutdown);
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int skygw_file_write(
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skygw_file_t* file,
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void* data,
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size_t nbytes,
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bool flush);
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/** Skygw file routines */
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EXTERN_C_BLOCK_BEGIN
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void acquire_lock(int* l);
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void release_lock(int* l);
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simple_mutex_t* simple_mutex_init(simple_mutex_t* mutexptr, const char* name);
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int simple_mutex_done(simple_mutex_t* sm);
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int simple_mutex_lock(simple_mutex_t* sm, bool block);
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int simple_mutex_unlock(simple_mutex_t* sm);
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/** Skygw message routines */
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skygw_message_t* skygw_message_init(void);
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void skygw_message_done(
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skygw_message_t* mes);
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skygw_mes_rc_t skygw_message_send(
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skygw_message_t* mes);
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void skygw_message_wait(
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skygw_message_t* mes);
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skygw_mes_rc_t skygw_message_request(
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skygw_message_t* mes);
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void skygw_message_reset(
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skygw_message_t* mes);
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/** Skygw message routines */
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EXTERN_C_BLOCK_END
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int skygw_rwlock_wrlock(skygw_rwlock_t* rwlock);
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int skygw_rwlock_rdlock(skygw_rwlock_t* rwlock);
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int skygw_rwlock_unlock(skygw_rwlock_t* rwlock);
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int skygw_rwlock_init(skygw_rwlock_t** rwlock);
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int atomic_add(int *variable, int value);
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EXTERN_C_BLOCK_BEGIN
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size_t get_decimal_len(size_t s);
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char* replace_literal(char* haystack,
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const char* needle,
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const char* replacement);
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bool is_valid_posix_path(char* path);
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EXTERN_C_BLOCK_END
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#endif /* SKYGW_UTILS_H */
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