isolation_main.c File Reference

#include "postgres_fe.h"
#include "pg_regress.h"

Include dependency graph for isolation_main.c:

Go to the source code of this file.

Macros
#define	PG_ISOLATION_VERSIONSTR   "isolationtester (PostgreSQL) " PG_VERSION "\n"

Functions
static PID_TYPE	isolation_start_test (const char *testname, _stringlist **resultfiles, _stringlist **expectfiles, _stringlist **tags)
static void	isolation_init (int argc, char **argv)
int	main (int argc, char *argv[])

Variables
char	saved_argv0 [MAXPGPATH]
char	isolation_exec [MAXPGPATH]
bool	looked_up_isolation_exec = false

Macro Definition Documentation

PG_ISOLATION_VERSIONSTR

#define PG_ISOLATION_VERSIONSTR   "isolationtester (PostgreSQL) " PG_VERSION "\n"

Definition at line 21 of file isolation_main.c.

Function Documentation

isolation_init()

static void isolation_init ( int  argc, char **  argv  )

static

Definition at line 120 of file isolation_main.c.

{
    size_t      argv0_len;
 
    /*
     * We unfortunately cannot do the find_other_exec() lookup to find the
     * "isolationtester" binary here.  regression_main() calls the
     * initialization functions before parsing the commandline arguments and
     * thus hasn't changed the library search path at this point which in turn
     * can cause the "isolationtester -V" invocation that find_other_exec()
     * does to fail since it's linked to libpq.  So we instead copy argv[0]
     * and do the lookup the first time through isolation_start_test().
     */
    argv0_len = strlcpy(saved_argv0, argv[0], MAXPGPATH);
    if (argv0_len >= MAXPGPATH)
    {
        fprintf(stderr, _("path for isolationtester executable is longer than %d bytes\n"),
                (int) (MAXPGPATH - 1));
        exit(2);
    }
 
    /* set default regression database name */
    add_stringlist_item(&dblist, "isolation_regression");
}

References _, add_stringlist_item(), dblist, exit(), fprintf, MAXPGPATH, saved_argv0, and strlcpy().

Referenced by main().

isolation_start_test()

static PID_TYPE isolation_start_test ( const char *  testname, _stringlist **  resultfiles, _stringlist **  expectfiles, _stringlist **  tags  )

static

Definition at line 28 of file isolation_main.c.

{
    PID_TYPE    pid;
    char        infile[MAXPGPATH];
    char        outfile[MAXPGPATH];
    char        expectfile[MAXPGPATH];
    char        psql_cmd[MAXPGPATH * 3];
    size_t      offset = 0;
    char       *appnameenv;
 
    /* need to do the path lookup here, check isolation_init() for details */
    if (!looked_up_isolation_exec)
    {
        /* look for isolationtester binary */
        if (find_other_exec(saved_argv0, "isolationtester",
                            PG_ISOLATION_VERSIONSTR, isolation_exec) != 0)
        {
            fprintf(stderr, _("could not find proper isolationtester binary\n"));
            exit(2);
        }
        looked_up_isolation_exec = true;
    }
 
    /*
     * Look for files in the output dir first, consistent with a vpath search.
     * This is mainly to create more reasonable error messages if the file is
     * not found.  It also allows local test overrides when running pg_regress
     * outside of the source tree.
     */
    snprintf(infile, sizeof(infile), "%s/specs/%s.spec",
             outputdir, testname);
    if (!file_exists(infile))
        snprintf(infile, sizeof(infile), "%s/specs/%s.spec",
                 inputdir, testname);
 
    snprintf(outfile, sizeof(outfile), "%s/results/%s.out",
             outputdir, testname);
 
    snprintf(expectfile, sizeof(expectfile), "%s/expected/%s.out",
             outputdir, testname);
    if (!file_exists(expectfile))
        snprintf(expectfile, sizeof(expectfile), "%s/expected/%s.out",
                 inputdir, testname);
 
    add_stringlist_item(resultfiles, outfile);
    add_stringlist_item(expectfiles, expectfile);
 
    if (launcher)
    {
        offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
                           "%s ", launcher);
        if (offset >= sizeof(psql_cmd))
        {
            fprintf(stderr, _("command too long\n"));
            exit(2);
        }
    }
 
    offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
                       "\"%s\" \"dbname=%s\" < \"%s\" > \"%s\" 2>&1",
                       isolation_exec,
                       dblist->str,
                       infile,
                       outfile);
    if (offset >= sizeof(psql_cmd))
    {
        fprintf(stderr, _("command too long\n"));
        exit(2);
    }
 
    appnameenv = psprintf("isolation/%s", testname);
    setenv("PGAPPNAME", appnameenv, 1);
    free(appnameenv);
 
    pid = spawn_process(psql_cmd);
 
    if (pid == INVALID_PID)
    {
        fprintf(stderr, _("could not start process for test %s\n"),
                testname);
        exit(2);
    }
 
    unsetenv("PGAPPNAME");
 
    return pid;
}

References _, add_stringlist_item(), dblist, exit(), file_exists(), find_other_exec(), fprintf, free, infile(), inputdir, INVALID_PID, isolation_exec, launcher, looked_up_isolation_exec, MAXPGPATH, outfile, outputdir, PG_ISOLATION_VERSIONSTR, PID_TYPE, psprintf(), saved_argv0, setenv, snprintf, spawn_process(), _stringlist::str, and unsetenv.

Referenced by main().

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 146 of file isolation_main.c.

{
    return regression_main(argc, argv,
                           isolation_init,
                           isolation_start_test,
                           NULL /* no postfunc needed */ );
}

References isolation_init(), isolation_start_test(), and regression_main().

Variable Documentation

isolation_exec

char isolation_exec[MAXPGPATH]

Definition at line 18 of file isolation_main.c.

Referenced by isolation_start_test().

looked_up_isolation_exec

bool looked_up_isolation_exec = false

Definition at line 19 of file isolation_main.c.

Referenced by isolation_start_test().

saved_argv0

char saved_argv0[MAXPGPATH]

Definition at line 17 of file isolation_main.c.

Referenced by isolation_init(), and isolation_start_test().