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tools.h
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1/*
2 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
3 *
4 * Squid software is distributed under GPLv2+ license and includes
5 * contributions from numerous individuals and organizations.
6 * Please see the COPYING and CONTRIBUTORS files for details.
7 */
8
9/* DEBUG: section 21 Misc Functions */
10
11#ifndef SQUID_SRC_TOOLS_H
12#define SQUID_SRC_TOOLS_H
13
14#include "sbuf/SBuf.h"
15#include "typedefs.h"
16
17class MemBuf;
18
19extern int DebugSignal;
20
23extern SBuf service_name;
24
25void parseEtcHosts(void);
26int getMyPort(void);
27void setUmask(mode_t mask);
28void strwordquote(MemBuf * mb, const char *str);
29
30class Packable;
31
32/* a common objPackInto interface; used by debugObj */
33typedef void (*ObjPackMethod) (void *obj, Packable * p);
34
35/* packs, then prints an object using debugs() */
36void debugObj(int section, int level, const char *label, void *obj, ObjPackMethod pm);
37
39typedef void SIGHDLR(int sig);
40
41const char *getMyHostname(void);
42const char *uniqueHostname(void);
43
44void death(int sig);
45void sigusr2_handle(int sig);
46void sig_child(int sig);
47void sig_shutdown(int sig);
48void leave_suid(void);
49void enter_suid(void);
50void no_suid(void);
51void setMaxFD(void);
52void setSystemLimits(void);
53void squid_signal(int sig, SIGHDLR *, int flags);
54void keepCapabilities(void);
55void BroadcastSignalIfAny(int& sig);
56
58bool IamMasterProcess();
67bool IamWorkerProcess();
69bool IamDiskProcess();
71bool InDaemonMode(); // try using specific Iam*() checks above first
73bool UsingSmp(); // try using specific Iam*() checks above first
75int NumberOfKids();
78
79void debug_trap(const char *);
80
81void logsFlush(void);
82
83void squid_getrusage(struct rusage *r);
84double rusage_cputime(struct rusage *r);
85int rusage_maxrss(struct rusage *r);
86int rusage_pagefaults(struct rusage *r);
87void releaseServerSockets(void);
88void PrintRusage(void);
89void dumpMallocStats(void);
90
91typedef int PidStatus;
92
99pid_t WaitForOnePid(pid_t pid, PidStatus &status, int flags);
100
107inline pid_t WaitForAnyPid(PidStatus &status, int flags)
108{
109 return WaitForOnePid(-1, status, flags);
110}
111
112#if _SQUID_WINDOWS_ || _SQUID_MINGW_
114SBuf WindowsErrorMessage(DWORD errorId);
115#endif // _SQUID_WINDOWS_ || _SQUID_MINGW_
116
117#endif /* SQUID_SRC_TOOLS_H */
118
static pid_t pid
Definition IcmpSquid.cc:36
Definition SBuf.h:94
void leave_suid(void)
Definition tools.cc:560
bool IamMasterProcess()
whether the current process is the parent of all other Squid processes
Definition tools.cc:669
bool InDaemonMode()
Whether we are running in daemon mode.
Definition tools.cc:691
void strwordquote(MemBuf *mb, const char *str)
Definition tools.cc:1081
pid_t WaitForOnePid(pid_t pid, PidStatus &status, int flags)
Definition tools.cc:1181
bool IamWorkerProcess()
whether the current process handles HTTP transactions and such
Definition stub_tools.cc:47
const char * getMyHostname(void)
Definition tools.cc:468
void setUmask(mode_t mask)
Definition tools.cc:1070
void death(int sig)
Definition tools.cc:346
void keepCapabilities(void)
Definition tools.cc:1123
void sigusr2_handle(int sig)
Definition tools.cc:434
void setMaxFD(void)
Definition tools.cc:763
void SIGHDLR(int sig)
callback type for signal handlers
Definition tools.h:39
void squid_getrusage(struct rusage *r)
Definition tools.cc:181
double rusage_cputime(struct rusage *r)
Definition tools.cc:239
bool IamPrimaryProcess()
Definition tools.cc:709
void no_suid(void)
Definition tools.cc:647
int PidStatus
Definition tools.h:91
void sig_child(int sig)
Definition main.cc:762
int rusage_maxrss(struct rusage *r)
Definition tools.cc:254
void PrintRusage(void)
Definition tools.cc:330
int NumberOfKids()
number of Kid processes as defined in src/ipc/Kid.h
Definition tools.cc:725
void squid_signal(int sig, SIGHDLR *, int flags)
Definition tools.cc:874
void enter_suid(void)
Definition tools.cc:624
void logsFlush(void)
Definition tools.cc:932
int getMyPort(void)
Definition tools.cc:1042
SBuf service_name
void sig_shutdown(int sig)
handles shutdown notifications from kids
void debugObj(int section, int level, const char *label, void *obj, ObjPackMethod pm)
Definition tools.cc:939
int DebugSignal
Definition stub_tools.cc:16
void parseEtcHosts(void)
Definition tools.cc:950
int rusage_pagefaults(struct rusage *r)
Definition tools.cc:275
void BroadcastSignalIfAny(int &sig)
Definition tools.cc:419
bool IamCoordinatorProcess()
whether the current process coordinates worker processes
Definition tools.cc:703
const char * uniqueHostname(void)
Definition tools.cc:548
void(* ObjPackMethod)(void *obj, Packable *p)
Definition tools.h:33
void releaseServerSockets(void)
Definition tools.cc:93
void dumpMallocStats(void)
Definition tools.cc:167
void debug_trap(const char *)
Definition tools.cc:459
bool UsingSmp()
Whether there should be more than one worker process running.
Definition tools.cc:697
SBuf ProcessRoles()
a string describing this process roles such as worker or coordinator
Definition tools.cc:740
bool IamDiskProcess()
whether the current process is dedicated to managing a cache_dir
Definition tools.cc:685
void setSystemLimits(void)
Definition tools.cc:812
pid_t WaitForAnyPid(PidStatus &status, int flags)
Definition tools.h:107
unsigned short mode_t
Definition types.h:129