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/**
* @file prefs.h
*
* Provides the preference structures of NJAMD
*/
#ifndef __NJ_LIB_PREFS_H__
#define __NJ_LIB_PREFS_H__
#include <config.h>
#include <sys/types.h>
#ifdef _THREAD_SAFE
# include <pthread.h>
#endif
/** Provides the prefrences that can only be set before runtime.
* 9 bits.. oh well we lose a byte. */
struct nj_static_prefs
{
u_int dump_stats : 1; /**< True,false */
u_int dump_leaks : 1; /**< true,false */
u_int persist : 1; /**< Does shit stick around after we die? */
u_int allow_read : 1; /**< Allow reads past the end of the buffer? */
u_int allow_free_0 : 1; /**< Allow free of NULL? */
u_int allow_malloc_0 : 1; /**< allow malloc of 0? */
u_int store_retaddrs : 1; /**< Store retaddrs at all? */
u_int mutable_alloc : 1; /**< Can we change the alloc type? */
u_int core_dump_type : 2; /**< Hard, soft, none */
u_int callstack_depth : 6; /**< Fixed callstack depth */
};
/** Provides a snapshot of the runtime mutable NJAMD state, to protect
* against race conditions. Fits in 32bits */
struct nj_dynamic_prefs
{
u_int trace_libs : 1; /**< Trace through libraries? */
u_int info_on_free : 1; /**< Provide info on free? MUST provide a callstack depth to change this */
u_int alloc_type : 2; /**< Allocation type */
u_int free_type : 2; /**< Free protection type */
u_int align : 26; /**< Alignment, unshifted */
};
struct nj_prefs
{
struct nj_static_prefs stat;
struct nj_dynamic_prefs dyn;
#ifdef _THREAD_SAFE
pthread_mutex_t set_lock;
#endif
};
void __nj_prefs_bootstrap_init(struct nj_prefs *);
void __nj_prefs_user_init(struct nj_prefs *);
void __nj_prefs_fini(struct nj_prefs *);
void __nj_prefs_set(struct nj_prefs *, struct nj_dynamic_prefs);
struct nj_dynamic_prefs __nj_prefs_get(struct nj_prefs *);
void __nj_prefs_load_from_env(struct nj_prefs *);
#endif /* prefs.h*/
// vim:ts=4
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