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Made code async-signal-safe

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This commit is contained in:
Gerhard Rieger 2015-01-12 21:46:16 +01:00
parent e4c6f3d934
commit 2af0495cc6
25 changed files with 1707 additions and 625 deletions

34
error.h
View file

@ -1,5 +1,5 @@
/* source: error.h */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger */
/* Published under the GNU General Public License V.2, see file COPYING */
#ifndef __error_h_included
@ -13,6 +13,7 @@
#define E_ERROR 4 /* errors */
#define E_FATAL 5 /* emergency abort */
#define F_strerror "%m" /* a pseudo format, replaced by strerror(errno) */
/* here are the macros for diag invocation; use WITH_MSGLEVEL to specify the
lowest priority that is compiled into your program */
@ -204,6 +205,33 @@
#endif /* !(WITH_MSGLEVEL <= E_FATAL) */
enum diag_op {
DIAG_OP_MSG, /* a diagnostic message */
DIAG_OP_EXIT, /* exit the program */
} ;
/* datagram for communication between outer msg() call from signal handler to
inner msg() call in normal flow */
# define TEXTLEN 480
struct diag_dgram {
enum diag_op op;
#if HAVE_CLOCK_GETTIME
struct timespec now;
#elif HAVE_GETTIMEOFDAY
struct timeval now;
#else
time_t now;
#endif
int level; /* E_FATAL, ... E_DEBUG */
int _errno; /* for glibc %m format */
int exitcode; /* if exiting take this num */
char text[TEXTLEN];
} ;
extern sig_atomic_t diag_in_handler;
extern int diag_immediate_msg;
extern int diag_immediate_exit;
extern void diag_set(char what, const char *arg);
extern void diag_set_int(char what, int arg);
extern int diag_get_int(char what);
@ -211,5 +239,9 @@ extern const char *diag_get_string(char what);
extern int diag_dup(void);
extern int diag_dup2(int newfd);
extern void msg(int level, const char *format, ...);
extern void diag_flush(void);
extern void diag_exit(int status);
extern int diag_select(int nfds, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, struct timeval *timeout);
#endif /* !defined(__error_h_included) */