1 /*-------------------------------------------------------------------------
2  *
3  * isolationtester.h
4  *	  include file for isolation tests
5  *
6  * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
7  * Portions Copyright (c) 1994, Regents of the University of California
8  *
9  * IDENTIFICATION
10  *		src/test/isolation/isolationtester.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef ISOLATIONTESTER_H
15 #define ISOLATIONTESTER_H
16 
17 /*
18  * The structs declared here are used in the output of specparse.y.
19  * Except where noted, all fields are set in the grammar and not
20  * changed thereafter.
21  */
22 typedef struct Step Step;
23 
24 typedef struct
25 {
26 	char	   *name;
27 	char	   *setupsql;
28 	char	   *teardownsql;
29 	Step	  **steps;
30 	int			nsteps;
31 } Session;
32 
33 struct Step
34 {
35 	char	   *name;
36 	char	   *sql;
37 	/* These fields are filled by check_testspec(): */
38 	int			session;		/* identifies owning session */
39 	bool		used;			/* has step been used in a permutation? */
40 };
41 
42 typedef enum
43 {
44 	PSB_ONCE,					/* force step to wait once */
45 	PSB_OTHER_STEP,				/* wait for another step to complete first */
46 	PSB_NUM_NOTICES				/* wait for N notices from another session */
47 } PermutationStepBlockerType;
48 
49 typedef struct
50 {
51 	char	   *stepname;
52 	PermutationStepBlockerType blocktype;
53 	int			num_notices;	/* only used for PSB_NUM_NOTICES */
54 	/* These fields are filled by check_testspec(): */
55 	Step	   *step;			/* link to referenced step (if any) */
56 	/* These fields are runtime workspace: */
57 	int			target_notices; /* total notices needed from other session */
58 } PermutationStepBlocker;
59 
60 typedef struct
61 {
62 	char	   *name;			/* name of referenced Step */
63 	PermutationStepBlocker **blockers;
64 	int			nblockers;
65 	/* These fields are filled by check_testspec(): */
66 	Step	   *step;			/* link to referenced Step */
67 } PermutationStep;
68 
69 typedef struct
70 {
71 	int			nsteps;
72 	PermutationStep **steps;
73 } Permutation;
74 
75 typedef struct
76 {
77 	char	  **setupsqls;
78 	int			nsetupsqls;
79 	char	   *teardownsql;
80 	Session   **sessions;
81 	int			nsessions;
82 	Permutation **permutations;
83 	int			npermutations;
84 } TestSpec;
85 
86 extern TestSpec parseresult;
87 
88 extern int	spec_yyparse(void);
89 
90 extern int	spec_yylex(void);
91 extern void spec_yyerror(const char *str);
92 
93 #endif							/* ISOLATIONTESTER_H */
94