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Diffstat (limited to 'security/nss/lib/util/nssilock.h')
| -rw-r--r-- | security/nss/lib/util/nssilock.h | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/security/nss/lib/util/nssilock.h b/security/nss/lib/util/nssilock.h new file mode 100644 index 000000000..01f666a79 --- /dev/null +++ b/security/nss/lib/util/nssilock.h @@ -0,0 +1,267 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* +** nssilock.h - Instrumented locking functions for NSS +** +** Description: +** nssilock provides instrumentation for locks and monitors in +** the NSS libraries. The instrumentation, when enabled, causes +** each call to the instrumented function to record data about +** the call to an external file. The external file +** subsequently used to extract performance data and other +** statistical information about the operation of locks used in +** the nss library. +** +** To enable compilation with instrumentation, build NSS with +** the compile time switch NEED_NSS_ILOCK defined. +** +** say: "gmake OS_CFLAGS+=-DNEED_NSS_ILOCK" at make time. +** +** At runtime, to enable recording from nssilock, one or more +** environment variables must be set. For each nssILockType to +** be recorded, an environment variable of the form NSS_ILOCK_x +** must be set to 1. For example: +** +** set NSS_ILOCK_Cert=1 +** +** nssilock uses PRLOG is used to record to trace data. The +** PRLogModule name associated with nssilock data is: "nssilock". +** To enable recording of nssilock data you will need to set the +** environment variable NSPR_LOG_MODULES to enable +** recording for the nssilock log module. Similarly, you will +** need to set the environment variable NSPR_LOG_FILE to specify +** the filename to receive the recorded data. See prlog.h for usage. +** Example: +** +** export NSPR_LOG_MODULES=nssilock:6 +** export NSPR_LOG_FILE=xxxLogfile +** +** Operation: +** nssilock wraps calls to NSPR's PZLock and PZMonitor functions +** with similarly named functions: PZ_NewLock(), etc. When NSS is +** built with lock instrumentation enabled, the PZ* functions are +** compiled into NSS; when lock instrumentation is disabled, +** calls to PZ* functions are directly mapped to PR* functions +** and the instrumentation arguments to the PZ* functions are +** compiled away. +** +** +** File Format: +** The format of the external file is implementation +** dependent. Where NSPR's PR_LOG() function is used, the file +** contains data defined for PR_LOG() plus the data written by +** the wrapped function. On some platforms and under some +** circumstances, platform dependent logging or +** instrumentation probes may be used. In any case, the +** relevant data provided by the lock instrumentation is: +** +** lockType, func, address, duration, line, file [heldTime] +** +** where: +** +** lockType: a character representation of nssILockType for the +** call. e.g. ... "cert" +** +** func: the function doing the tracing. e.g. "NewLock" +** +** address: address of the instrumented lock or monitor +** +** duration: is how long was spent in the instrumented function, +** in PRIntervalTime "ticks". +** +** line: the line number within the calling function +** +** file: the file from which the call was made +** +** heldTime: how long the lock/monitor was held. field +** present only for PZ_Unlock() and PZ_ExitMonitor(). +** +** Design Notes: +** The design for lock instrumentation was influenced by the +** need to gather performance data on NSS 3.x. It is intended +** that the effort to modify NSS to use lock instrumentation +** be minimized. Existing calls to locking functions need only +** have their names changed to the instrumentation function +** names. +** +** Private NSS Interface: +** nssilock.h defines a private interface for use by NSS. +** nssilock.h is experimental in nature and is subject to +** change or revocation without notice. ... Don't mess with +** it. +** +*/ + +/* + * $Id: + */ + +#ifndef _NSSILOCK_H_ +#define _NSSILOCK_H_ + +#include "utilrename.h" +#include "prtypes.h" +#include "prmon.h" +#include "prlock.h" +#include "prcvar.h" + +#include "nssilckt.h" + +PR_BEGIN_EXTERN_C + +#if defined(NEED_NSS_ILOCK) + +#define PZ_NewLock(t) pz_NewLock((t), __FILE__, __LINE__) +extern PZLock * +pz_NewLock( + nssILockType ltype, + char *file, + PRIntn line); + +#define PZ_Lock(k) pz_Lock((k), __FILE__, __LINE__) +extern void +pz_Lock( + PZLock *lock, + char *file, + PRIntn line); + +#define PZ_Unlock(k) pz_Unlock((k), __FILE__, __LINE__) +extern PRStatus +pz_Unlock( + PZLock *lock, + char *file, + PRIntn line); + +#define PZ_DestroyLock(k) pz_DestroyLock((k), __FILE__, __LINE__) +extern void +pz_DestroyLock( + PZLock *lock, + char *file, + PRIntn line); + +#define PZ_NewCondVar(l) pz_NewCondVar((l), __FILE__, __LINE__) +extern PZCondVar * +pz_NewCondVar( + PZLock *lock, + char *file, + PRIntn line); + +#define PZ_DestroyCondVar(v) pz_DestroyCondVar((v), __FILE__, __LINE__) +extern void +pz_DestroyCondVar( + PZCondVar *cvar, + char *file, + PRIntn line); + +#define PZ_WaitCondVar(v, t) pz_WaitCondVar((v), (t), __FILE__, __LINE__) +extern PRStatus +pz_WaitCondVar( + PZCondVar *cvar, + PRIntervalTime timeout, + char *file, + PRIntn line); + +#define PZ_NotifyCondVar(v) pz_NotifyCondVar((v), __FILE__, __LINE__) +extern PRStatus +pz_NotifyCondVar( + PZCondVar *cvar, + char *file, + PRIntn line); + +#define PZ_NotifyAllCondVar(v) pz_NotifyAllCondVar((v), __FILE__, __LINE__) +extern PRStatus +pz_NotifyAllCondVar( + PZCondVar *cvar, + char *file, + PRIntn line); + +#define PZ_NewMonitor(t) pz_NewMonitor((t), __FILE__, __LINE__) +extern PZMonitor * +pz_NewMonitor( + nssILockType ltype, + char *file, + PRIntn line); + +#define PZ_DestroyMonitor(m) pz_DestroyMonitor((m), __FILE__, __LINE__) +extern void +pz_DestroyMonitor( + PZMonitor *mon, + char *file, + PRIntn line); + +#define PZ_EnterMonitor(m) pz_EnterMonitor((m), __FILE__, __LINE__) +extern void +pz_EnterMonitor( + PZMonitor *mon, + char *file, + PRIntn line); + +#define PZ_ExitMonitor(m) pz_ExitMonitor((m), __FILE__, __LINE__) +extern PRStatus +pz_ExitMonitor( + PZMonitor *mon, + char *file, + PRIntn line); + +#define PZ_InMonitor(m) (PZ_GetMonitorEntryCount(m) > 0) +#define PZ_GetMonitorEntryCount(m) pz_GetMonitorEntryCount((m), __FILE__, __LINE__) +extern PRIntn +pz_GetMonitorEntryCount( + PZMonitor *mon, + char *file, + PRIntn line); + +#define PZ_Wait(m, i) pz_Wait((m), ((i)), __FILE__, __LINE__) +extern PRStatus +pz_Wait( + PZMonitor *mon, + PRIntervalTime ticks, + char *file, + PRIntn line); + +#define PZ_Notify(m) pz_Notify((m), __FILE__, __LINE__) +extern PRStatus +pz_Notify( + PZMonitor *mon, + char *file, + PRIntn line); + +#define PZ_NotifyAll(m) pz_NotifyAll((m), __FILE__, __LINE__) +extern PRStatus +pz_NotifyAll( + PZMonitor *mon, + char *file, + PRIntn line); + +#define PZ_TraceFlush() pz_TraceFlush() +extern void pz_TraceFlush(void); + +#else /* NEED_NSS_ILOCK */ + +#define PZ_NewLock(t) PR_NewLock() +#define PZ_DestroyLock(k) PR_DestroyLock((k)) +#define PZ_Lock(k) PR_Lock((k)) +#define PZ_Unlock(k) PR_Unlock((k)) + +#define PZ_NewCondVar(l) PR_NewCondVar((l)) +#define PZ_DestroyCondVar(v) PR_DestroyCondVar((v)) +#define PZ_WaitCondVar(v, t) PR_WaitCondVar((v), (t)) +#define PZ_NotifyCondVar(v) PR_NotifyCondVar((v)) +#define PZ_NotifyAllCondVar(v) PR_NotifyAllCondVar((v)) + +#define PZ_NewMonitor(t) PR_NewMonitor() +#define PZ_DestroyMonitor(m) PR_DestroyMonitor((m)) +#define PZ_EnterMonitor(m) PR_EnterMonitor((m)) +#define PZ_ExitMonitor(m) PR_ExitMonitor((m)) +#define PZ_InMonitor(m) PR_InMonitor((m)) +#define PZ_Wait(m, t) PR_Wait(((m)), ((t))) +#define PZ_Notify(m) PR_Notify((m)) +#define PZ_NotifyAll(m) PR_Notify((m)) +#define PZ_TraceFlush() /* nothing */ + +#endif /* NEED_NSS_ILOCK */ + +PR_END_EXTERN_C +#endif /* _NSSILOCK_H_ */ |