356 lines
9.2 KiB
C
356 lines
9.2 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2009 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#ifndef V010_JNL_H_INCLUDED
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#define V010_JNL_H_INCLUDED
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#ifndef V010_JNLSP_H_INCLUDED
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#include "v010_jnlsp.h"
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#endif
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#define JNL_LABEL_TEXT "GDSJNL06A"
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#define JNL_ALLOC_DEF 100
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#define JNL_ALLOC_MIN 10
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/* #define JNL_ALLOC_MAX 16777216 moved to jnlsp.h */
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#define JNL_BUFFER_DEF 128
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/* JNL_BUFFER_MIN database block size / 512 + 1 */
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#define JNL_BUFFER_MAX 2016
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/* JNL_EXTEND_DEF allocation size / 10 */
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#define JNL_EXTEND_DEF_PERC 0.1
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#define JNL_EXTEND_MIN 0
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#define JNL_EXTEND_MAX 65535
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#define JNL_MIN_WRITE 32768
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#define JNL_MAX_WRITE 65536
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#define JNL_EXT_DEF ".MJL"
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#define JNL_REC_TRAILER 0xFE
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#define JNL_MAX_FLUSH_TRIES 512
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#define JNL_WRT_START_MASK ~511
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#define JNL_WRT_END_MASK ~7
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#define JNL_ENABLED(X) ((X)->jnl_state == jnl_open) /* If TRUE, journal records are to be written */
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#define JNL_ALLOWED(X) ((X)->jnl_state != jnl_notallowed) /* If TRUE, journalling is allowed for the file */
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#define PADDED PADDING
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#ifdef BIGENDIAN
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#define THREE_LOW_BYTES(x) ((uchar_ptr_t)((uchar_ptr_t)&x + 1))
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#else
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#define THREE_LOW_BYTES(x) ((uchar_ptr_t)(&x))
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#endif
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enum jnl_record_type
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{
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#define JNL_TABLE_ENTRY(A,B,C,D) A,
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#include "v12_jnl_rec_table.h"
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#undef JNL_TABLE_ENTRY
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JRT_RECTYPES /* Total number of journal record types */
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};
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enum jnl_state_codes
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{
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jnl_notallowed,
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jnl_closed,
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jnl_open,
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};
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typedef struct
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{
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int4 min_write_size, /* if unwritten data gets to this size, write it */
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max_write_size, /* maximum size of any single write */
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size; /* buffer size */
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unsigned short epoch_size; /* How many transactions per epoch */
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bool before_images; /* If TRUE, before-image processing is enabled */
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char filler;
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/* end not volatile QUAD */
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volatile int4 free; /* relative index of first byte to write in buffer */
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volatile uint4 freeaddr, /* virtual on-disk address which will correspond to free, when it is written */
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lastaddr, /* previous freeaddr */
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filesize; /* highest virtual address available in the file */
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/* end mainline QUAD */
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volatile int4 blocked;
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int4 filler_int4;
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volatile int4 dsk; /* relative index of 1st byte to write to disk;
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* if free == dsk, buffer is empty */
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volatile int4 wrtsize; /* size of write in progress */
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volatile uint4 dskaddr, /* virtual on-disk address corresponding to dsk */
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now_writer, /* current owner of io_in_prog */
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image_count; /* for VMS is_proc_alive */
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volatile struct /* must be at least word aligned for memory coherency */
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{
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short cond;
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unsigned short length;
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int4 dev_specific;
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} iosb;
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int4 filler_int; /* end ast QUAD */
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volatile int4 qiocnt, /* Number of qio's issued */
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bytcnt, /* Number of bytes written */
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errcnt, /* Number of errors during writing */
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reccnt[JRT_RECTYPES]; /* Number of records written per opcode */
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volatile trans_num epoch_tn; /* Transaction number for current epoch */
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double filler_q1; /* QUAD reset to insure memory coherency of the following int */
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int io_in_prog; /* If 1, write is in progress (NOTE: must manipulate
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only with interlocked instructions */
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double filler_q2; /* QUAD reset to insure quadword alignment in comment below */
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global_latch_t jb_latch; /* needed by aswp on HPPA, 16 bytes */
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CACHELINE_PAD(SIZEOF(global_latch_t), 1) /* ; supplied by macro */
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/************************************************************************************/
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/* Important: must keep header structure quadword aligned for buffers used in QIO's */
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/************************************************************************************/
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unsigned char buff[1]; /* Actually buff[size] */
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} jnl_buffer;
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#ifdef DB64
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# ifdef __osf__
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# pragma pointer_size(save)
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# pragma pointer_size(long)
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# else
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# error UNSUPPORTED PLATFORM
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# endif
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#endif
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typedef jnl_buffer *jnl_buffer_ptr_t;
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#ifdef DB64
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# ifdef __osf__
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# pragma pointer_size(restore)
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# endif
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#endif
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typedef struct jnl_private_control_struct
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{
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jnl_buffer_ptr_t jnl_buff; /* pointer to shared memory */
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gd_region *region; /* backpointer to region head */
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fd_type channel, /* output channel, aka fd in UNIX */
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old_channel; /* VMS only - for dealing with deferred deassign */
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gd_id fileid; /* used for UNIX only */
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vms_lock_sb *jnllsb; /* VMS only */
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bool free_update_inprog; /* M VMS only */
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unsigned char regnum; /* M index for 'tokens' */
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unsigned char filler_char[2];
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uint4 pini_addr, /* virtual on-disk address for JRT_PINI record, if journalling */
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lastwrite, /* M used by jnl_wait */
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new_freeaddr; /* M VMS only */
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int4 temp_free; /* M Temp copy of free relative index until full write done */
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double filler_q0; /* reset QUAD end mainline */
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int4 new_dsk; /* A VMS only */
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uint4 new_dskaddr, /* A VMS only */
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status; /* A for error reporting */
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bool dsk_update_inprog; /* A VMS only */
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volatile bool qio_active; /* A This process, referenced but not used in UNIX */
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char filler1[2]; /* prior 3 fields are maintained by AST - preserve memory coherency */
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} jnl_private_control;
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typedef enum
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{
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JNL_KILL,
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JNL_SET,
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JNL_ZKILL
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} jnl_action_code;
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typedef enum
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{
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/* 00 */ MUEXT_NULL,
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/* 01 */ MUEXT_PINI,
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/* 02 */ MUEXT_PFIN,
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/* 03 */ MUEXT_EOF,
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/* 04 */ MUEXT_KILL,
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/* 05 */ MUEXT_SET,
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/* 06 */ MUEXT_ZTSTART,
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/* 07 */ MUEXT_ZTCOMMIT,
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/* 08 */ MUEXT_TSTART,
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/* 09 */ MUEXT_TCOMMIT,
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/* 10 */ MUEXT_ZKILL,
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MUEXT_MAX_TYPES
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} muextract_type;
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typedef struct
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{
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gv_key *key;
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mstr val;
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jnl_action_code operation;
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} jnl_action;
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typedef struct
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{
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sgmnt_addrs *fence_list;
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int level;
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short total_regions,
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region_count;
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uint4 token;
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} jnl_fence_control;
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typedef struct
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{
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char label[SIZEOF(JNL_LABEL_TEXT) - 1];
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jnl_process_vector who_created,
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who_opened;
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uint4 end_of_data;
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int4 max_record_length;
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uint4 bov_timestamp,
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eov_timestamp;
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bool before_images;
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unsigned char data_file_name_length;
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char data_file_name[255];
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} jnl_file_header;
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typedef struct
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{
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int4 status,
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alloc,
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extend,
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buffer;
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trans_num tn;
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char *fn,
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*jnl,
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*jnl_def;
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short rsize,
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fn_len,
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jnl_len,
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jnl_def_len;
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bool before_images;
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} jnl_create_info;
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/* Journal record definitions */
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typedef struct
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{
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unsigned short length;
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char text[1]; /* Actually text[length] */
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} jnl_string;
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struct jrec_pini_struct
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{
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jnl_process_vector process_vector;
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};
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struct jrec_pfin_struct
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{
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jnl_process_vector process_vector;
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uint4 pini_addr;
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trans_num tn;
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};
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struct jrec_tcom_struct
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{
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uint4 pini_addr;
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uint4 short_time;
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trans_num tn;
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uint4 token,
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participants;
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};
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struct jrec_kill_set_struct
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{
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uint4 pini_addr;
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uint4 short_time;
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trans_num tn;
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jnl_string mumps_node;
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/* Note: for SET, mumps data follows mumps_node */
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};
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struct jrec_tp_kill_set_struct
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{
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uint4 pini_addr;
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uint4 short_time;
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trans_num tn;
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uint4 token;
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jnl_string mumps_node;
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/* Note: for FSET, GSET, TSET, and USET, mumps data follows mumps_node */
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};
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struct jrec_pblk_struct
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{
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uint4 pini_addr;
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uint4 short_time;
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block_id blknum;
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unsigned short bsiz;
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char blk_contents[1]; /* Actually blk_contents[bsiz] */
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};
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struct jrec_epoch_struct
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{
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uint4 pini_addr;
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uint4 short_time;
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trans_num tn;
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};
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struct jrec_eof_struct
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{
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jnl_process_vector process_vector;
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trans_num tn;
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};
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typedef union
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{
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struct jrec_pini_struct jrec_pini;
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struct jrec_pfin_struct jrec_pfin;
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struct jrec_tcom_struct jrec_tcom,
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jrec_ztcom;
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struct jrec_kill_set_struct jrec_kill,
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jrec_set,
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jrec_zkill;
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struct jrec_tp_kill_set_struct jrec_fkill,
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jrec_gkill,
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jrec_tkill,
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jrec_ukill,
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jrec_fset,
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jrec_gset,
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jrec_tset,
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jrec_uset,
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jrec_fzkill,
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jrec_gzkill,
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jrec_tzkill,
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jrec_uzkill;
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struct jrec_pblk_struct jrec_pblk;
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struct jrec_epoch_struct jrec_epoch;
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struct jrec_eof_struct jrec_eof;
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} jrec_union;
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typedef struct
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{
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char jrec_type; /* Actually, enum jnl_record_type */
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unsigned int jrec_backpointer : 24; /* Offset to beginning of last record */
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} jrec_prefix;
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typedef struct
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{
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/* Prefix: */
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char jrec_type; /* Actually, enum jnl_record_type */
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unsigned int jrec_backpointer : 24; /* Offset to beginning of last record */
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/* Journal record: */
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jrec_union val;
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/* Suffix follows journal record */
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} jnl_record;
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typedef struct
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{
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unsigned int backptr : 24;
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unsigned int suffix_code : 8;
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} jrec_suffix;
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#define JREC_PREFIX_SIZE SIZEOF(jrec_prefix)
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#define JREC_SUFFIX_SIZE SIZEOF(jrec_suffix)
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#define JNL_SHARE_SIZE(X) (JNL_ALLOWED(X) ? ((DIVIDE_ROUND_UP(JNL_NAME_EXP_SIZE + SIZEOF(jnl_buffer), OS_PAGELET_SIZE) \
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+ ((sgmnt_data_ptr_t)X)->jnl_buffer_size) * OS_PAGELET_SIZE) : 0)
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/* pass address of jnl_buffer to get address of expanded jnl file name */
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#define JNL_NAME_EXP_PTR(X) ((sm_uc_ptr_t)(X) - JNL_NAME_EXP_SIZE)
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#endif
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