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haiku/headers/os/kernel/OS.h
Stephan Aßmus e1f3108a60 Patch by Scott: 
Make sure the comments are C style in headers that are included by POSIX
headers.

Thanks! Should fix #2870.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28598 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-10 23:50:42 +00:00

761 lines
22 KiB
C
Raw Blame History

/* Kernel specific structures and functions
*
* Copyright 2004-2006, Haiku Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _OS_H
#define _OS_H
#include <stdarg.h>
#include <SupportDefs.h>
#include <StorageDefs.h>
#ifdef __cplusplus
extern "C" {
#endif
/*-------------------------------------------------------------*/
/* System constants */
#define B_OS_NAME_LENGTH 32
#define B_PAGE_SIZE 4096
#define B_INFINITE_TIMEOUT (9223372036854775807LL)
enum {
B_TIMEOUT = 0x8, /* relative timeout */
B_RELATIVE_TIMEOUT = 0x8, /* fails after a relative timeout
with B_TIMED_OUT */
B_ABSOLUTE_TIMEOUT = 0x10, /* fails after an absolute timeout
with B_TIMED_OUT */
/* experimental Haiku only API */
B_TIMEOUT_REAL_TIME_BASE = 0x40,
B_ABSOLUTE_REAL_TIME_TIMEOUT = B_ABSOLUTE_TIMEOUT
| B_TIMEOUT_REAL_TIME_BASE
};
/*-------------------------------------------------------------*/
/* Types */
typedef int32 area_id;
typedef int32 port_id;
typedef int32 sem_id;
typedef int32 team_id;
typedef int32 thread_id;
/*-------------------------------------------------------------*/
/* Areas */
typedef struct area_info {
area_id area;
char name[B_OS_NAME_LENGTH];
size_t size;
uint32 lock;
uint32 protection;
team_id team;
uint32 ram_size;
uint32 copy_count;
uint32 in_count;
uint32 out_count;
void *address;
} area_info;
/* area locking */
#define B_NO_LOCK 0
#define B_LAZY_LOCK 1
#define B_FULL_LOCK 2
#define B_CONTIGUOUS 3
#define B_LOMEM 4
/* address spec for create_area(), and clone_area() */
#define B_ANY_ADDRESS 0
#define B_EXACT_ADDRESS 1
#define B_BASE_ADDRESS 2
#define B_CLONE_ADDRESS 3
#define B_ANY_KERNEL_ADDRESS 4
/* area protection */
#define B_READ_AREA 1
#define B_WRITE_AREA 2
extern area_id create_area(const char *name, void **startAddress, uint32 addressSpec,
size_t size, uint32 lock, uint32 protection);
extern area_id clone_area(const char *name, void **destAddress, uint32 addressSpec,
uint32 protection, area_id source);
extern area_id find_area(const char *name);
extern area_id area_for(void *address);
extern status_t delete_area(area_id id);
extern status_t resize_area(area_id id, size_t newSize);
extern status_t set_area_protection(area_id id, uint32 newProtection);
/* system private, use macros instead */
extern status_t _get_area_info(area_id id, area_info *areaInfo, size_t size);
extern status_t _get_next_area_info(team_id team, int32 *cookie,
area_info *areaInfo, size_t size);
#define get_area_info(id, areaInfo) \
_get_area_info((id), (areaInfo),sizeof(*(areaInfo)))
#define get_next_area_info(team, cookie, areaInfo) \
_get_next_area_info((team), (cookie), (areaInfo), sizeof(*(areaInfo)))
/*-------------------------------------------------------------*/
/* Ports */
typedef struct port_info {
port_id port;
team_id team;
char name[B_OS_NAME_LENGTH];
int32 capacity; /* queue depth */
int32 queue_count; /* # msgs waiting to be read */
int32 total_count; /* total # msgs read so far */
} port_info;
extern port_id create_port(int32 capacity, const char *name);
extern port_id find_port(const char *name);
extern ssize_t read_port(port_id port, int32 *code, void *buffer, size_t bufferSize);
extern ssize_t read_port_etc(port_id port, int32 *code, void *buffer, size_t bufferSize,
uint32 flags, bigtime_t timeout);
extern status_t write_port(port_id port, int32 code, const void *buffer, size_t bufferSize);
extern status_t write_port_etc(port_id port, int32 code, const void *buffer,
size_t bufferSize, uint32 flags, bigtime_t timeout);
extern status_t close_port(port_id port);
extern status_t delete_port(port_id port);
extern ssize_t port_buffer_size(port_id port);
extern ssize_t port_buffer_size_etc(port_id port, uint32 flags, bigtime_t timeout);
extern ssize_t port_count(port_id port);
extern status_t set_port_owner(port_id port, team_id team);
/* system private, use the macros instead */
extern status_t _get_port_info(port_id port, port_info *portInfo, size_t portInfoSize);
extern status_t _get_next_port_info(team_id team, int32 *cookie, port_info *portInfo,
size_t portInfoSize);
#define get_port_info(port, info) \
_get_port_info((port), (info), sizeof(*(info)))
#define get_next_port_info(team, cookie, info) \
_get_next_port_info((team), (cookie), (info), sizeof(*(info)))
/* WARNING: The following is Haiku experimental API. It might be removed or
changed in the future. */
typedef struct port_message_info {
size_t size;
uid_t sender;
gid_t sender_group;
team_id sender_team;
} port_message_info;
/* similar to port_buffer_size_etc(), but returns (more) info */
extern status_t _get_port_message_info_etc(port_id port,
port_message_info *info, size_t infoSize, uint32 flags,
bigtime_t timeout);
#define get_port_message_info_etc(port, info, flags, timeout) \
_get_port_message_info_etc((port), (info), sizeof(*(info)), flags, \
timeout)
/*-------------------------------------------------------------*/
/* Semaphores */
typedef struct sem_info {
sem_id sem;
team_id team;
char name[B_OS_NAME_LENGTH];
int32 count;
thread_id latest_holder;
} sem_info;
/* semaphore flags */
enum {
B_CAN_INTERRUPT = 0x01, /* acquisition of the semaphore can be
interrupted (system use only) */
B_CHECK_PERMISSION = 0x04, /* ownership will be checked (system use
only) */
B_KILL_CAN_INTERRUPT = 0x20, /* acquisition of the semaphore can be
interrupted by SIGKILL[THR], even
if not B_CAN_INTERRUPT (system use
only) */
/* release_sem_etc() only flags */
B_DO_NOT_RESCHEDULE = 0x02, /* thread is not rescheduled */
B_RELEASE_ALL = 0x08, /* all waiting threads will be woken up,
count will be zeroed */
B_RELEASE_IF_WAITING_ONLY = 0x10 /* release count only if there are any
threads waiting */
};
extern sem_id create_sem(int32 count, const char *name);
extern status_t delete_sem(sem_id id);
extern status_t acquire_sem(sem_id id);
extern status_t acquire_sem_etc(sem_id id, int32 count, uint32 flags, bigtime_t timeout);
extern status_t release_sem(sem_id id);
extern status_t release_sem_etc(sem_id id, int32 count, uint32 flags);
/* ToDo: the following two calls are not part of the BeOS API, and might be
changed or even removed for the final release of Haiku R1 */
extern status_t switch_sem(sem_id semToBeReleased, sem_id id);
extern status_t switch_sem_etc(sem_id semToBeReleased, sem_id id, int32 count,
uint32 flags, bigtime_t timeout);
extern status_t get_sem_count(sem_id id, int32 *threadCount);
extern status_t set_sem_owner(sem_id id, team_id team);
/* system private, use the macros instead */
extern status_t _get_sem_info(sem_id id, struct sem_info *info, size_t infoSize);
extern status_t _get_next_sem_info(team_id team, int32 *cookie, struct sem_info *info,
size_t infoSize);
#define get_sem_info(sem, info) \
_get_sem_info((sem), (info), sizeof(*(info)))
#define get_next_sem_info(team, cookie, info) \
_get_next_sem_info((team), (cookie), (info), sizeof(*(info)))
/*-------------------------------------------------------------*/
/* Teams */
typedef struct {
team_id team;
int32 thread_count;
int32 image_count;
int32 area_count;
thread_id debugger_nub_thread;
port_id debugger_nub_port;
int32 argc;
char args[64];
uid_t uid;
gid_t gid;
} team_info;
#define B_CURRENT_TEAM 0
#define B_SYSTEM_TEAM 1
extern status_t kill_team(team_id team);
/* see also: send_signal() */
/* system private, use macros instead */
extern status_t _get_team_info(team_id id, team_info *info, size_t size);
extern status_t _get_next_team_info(int32 *cookie, team_info *info, size_t size);
#define get_team_info(id, info) \
_get_team_info((id), (info), sizeof(*(info)))
#define get_next_team_info(cookie, info) \
_get_next_team_info((cookie), (info), sizeof(*(info)))
/* team usage info */
typedef struct {
bigtime_t user_time;
bigtime_t kernel_time;
} team_usage_info;
enum {
/* compatible to sys/resource.h RUSAGE_SELF and RUSAGE_CHILDREN */
B_TEAM_USAGE_SELF = 0,
B_TEAM_USAGE_CHILDREN = -1
};
/* system private, use macros instead */
extern status_t _get_team_usage_info(team_id team, int32 who, team_usage_info *info, size_t size);
#define get_team_usage_info(team, who, info) \
_get_team_usage_info((team), (who), (info), sizeof(*(info)))
/*-------------------------------------------------------------*/
/* Threads */
typedef enum {
B_THREAD_RUNNING = 1,
B_THREAD_READY,
B_THREAD_RECEIVING,
B_THREAD_ASLEEP,
B_THREAD_SUSPENDED,
B_THREAD_WAITING
} thread_state;
typedef struct {
thread_id thread;
team_id team;
char name[B_OS_NAME_LENGTH];
thread_state state;
int32 priority;
sem_id sem;
bigtime_t user_time;
bigtime_t kernel_time;
void *stack_base;
void *stack_end;
} thread_info;
#define B_IDLE_PRIORITY 0
#define B_LOWEST_ACTIVE_PRIORITY 1
#define B_LOW_PRIORITY 5
#define B_NORMAL_PRIORITY 10
#define B_DISPLAY_PRIORITY 15
#define B_URGENT_DISPLAY_PRIORITY 20
#define B_REAL_TIME_DISPLAY_PRIORITY 100
#define B_URGENT_PRIORITY 110
#define B_REAL_TIME_PRIORITY 120
#define B_SYSTEM_TIMEBASE 0
#define B_FIRST_REAL_TIME_PRIORITY B_REAL_TIME_DISPLAY_PRIORITY
typedef status_t (*thread_func)(void *);
#define thread_entry thread_func
/* thread_entry is for backward compatibility only! Use thread_func */
extern thread_id spawn_thread(thread_func, const char *name, int32 priority, void *data);
extern status_t kill_thread(thread_id thread);
extern status_t resume_thread(thread_id thread);
extern status_t suspend_thread(thread_id thread);
extern status_t rename_thread(thread_id thread, const char *newName);
extern status_t set_thread_priority (thread_id thread, int32 newPriority);
extern void exit_thread(status_t status);
extern status_t wait_for_thread (thread_id thread, status_t *threadReturnValue);
extern status_t on_exit_thread(void (*callback)(void *), void *data);
extern thread_id find_thread(const char *name);
extern status_t send_data(thread_id thread, int32 code, const void *buffer,
size_t bufferSize);
extern int32 receive_data(thread_id *sender, void *buffer, size_t bufferSize);
extern bool has_data(thread_id thread);
extern status_t snooze(bigtime_t amount);
extern status_t snooze_etc(bigtime_t amount, int timeBase, uint32 flags);
extern status_t snooze_until(bigtime_t time, int timeBase);
/* system private, use macros instead */
extern status_t _get_thread_info(thread_id id, thread_info *info, size_t size);
extern status_t _get_next_thread_info(team_id team, int32 *cookie,
thread_info *info, size_t size);
#define get_thread_info(id, info) \
_get_thread_info((id), (info), sizeof(*(info)))
#define get_next_thread_info(team, cookie, info) \
_get_next_thread_info((team), (cookie), (info), sizeof(*(info)))
/*-------------------------------------------------------------*/
/* Time */
extern uint32 real_time_clock(void);
extern void set_real_time_clock(uint32 secs_since_jan1_1970);
extern bigtime_t real_time_clock_usecs(void);
extern status_t set_timezone(char *timezone);
extern bigtime_t system_time(void); /* time since booting in microseconds */
/*-------------------------------------------------------------*/
/* Alarm */
enum {
B_ONE_SHOT_ABSOLUTE_ALARM = 1,
B_ONE_SHOT_RELATIVE_ALARM,
B_PERIODIC_ALARM /* "when" specifies the period */
};
extern bigtime_t set_alarm(bigtime_t when, uint32 flags);
/*-------------------------------------------------------------*/
/* Debugger */
extern void debugger(const char *message);
/*
calling this function with a non-zero value will cause your thread
to receive signals for any exceptional conditions that occur (i.e.
you'll get SIGSEGV for data access exceptions, SIGFPE for floating
point errors, SIGILL for illegal instructions, etc).
to re-enable the default debugger pass a zero.
*/
extern int disable_debugger(int state);
/* TODO: Remove. Temporary debug helper. */
extern void debug_printf(const char *format, ...)
__attribute__ ((format (__printf__, 1, 2)));
extern void debug_vprintf(const char *format, va_list args);
extern void ktrace_printf(const char *format, ...)
__attribute__ ((format (__printf__, 1, 2)));
extern void ktrace_vprintf(const char *format, va_list args);
/*-------------------------------------------------------------*/
/* System information */
#if __INTEL__
# define B_MAX_CPU_COUNT 8
#elif __POWERPC__
# define B_MAX_CPU_COUNT 8
#elif __M68K__
# define B_MAX_CPU_COUNT 1
#elif __ARM__
# define B_MAX_CPU_COUNT 1
#else
# warning Unknown cpu
# define B_MAX_CPU_COUNT 1
#endif
#define OBOS_CPU_TYPES
typedef enum cpu_types {
/* ToDo: add latest models */
/* Motorola/IBM */
B_CPU_PPC_UNKNOWN = 0,
B_CPU_PPC_601 = 1,
B_CPU_PPC_602 = 7,
B_CPU_PPC_603 = 2,
B_CPU_PPC_603e = 3,
B_CPU_PPC_603ev = 8,
B_CPU_PPC_604 = 4,
B_CPU_PPC_604e = 5,
B_CPU_PPC_604ev = 9,
B_CPU_PPC_620 = 10,
B_CPU_PPC_750 = 6,
B_CPU_PPC_686 = 13,
B_CPU_PPC_860 = 25,
B_CPU_PPC_7400 = 26,
B_CPU_PPC_7410 = 27,
B_CPU_PPC_7447A = 28,
B_CPU_PPC_7448 = 29,
B_CPU_PPC_7450 = 30,
B_CPU_PPC_7455 = 31,
B_CPU_PPC_7457 = 32,
B_CPU_PPC_8240 = 33,
B_CPU_PPC_8245 = 34,
B_CPU_PPC_IBM_401A1 = 35,
B_CPU_PPC_IBM_401B2 = 36,
B_CPU_PPC_IBM_401C2 = 37,
B_CPU_PPC_IBM_401D2 = 38,
B_CPU_PPC_IBM_401E2 = 39,
B_CPU_PPC_IBM_401F2 = 40,
B_CPU_PPC_IBM_401G2 = 41,
B_CPU_PPC_IBM_403 = 42,
B_CPU_PPC_IBM_405GP = 43,
B_CPU_PPC_IBM_405L = 44,
B_CPU_PPC_IBM_750FX = 45,
B_CPU_PPC_IBM_POWER3 = 46,
/* Intel */
/* Updated according to Intel(R) Processor Identification and
* the CPUID instruction (Table 4)
* AP-485 Intel - 24161832.pdf
*/
B_CPU_INTEL_x86 = 0x1000,
B_CPU_INTEL_PENTIUM = 0x1051,
B_CPU_INTEL_PENTIUM75,
B_CPU_INTEL_PENTIUM_486_OVERDRIVE,
B_CPU_INTEL_PENTIUM_MMX,
B_CPU_INTEL_PENTIUM_MMX_MODEL_4 = B_CPU_INTEL_PENTIUM_MMX,
B_CPU_INTEL_PENTIUM_MMX_MODEL_8 = 0x1058,
B_CPU_INTEL_PENTIUM75_486_OVERDRIVE,
B_CPU_INTEL_PENTIUM_PRO = 0x1061,
B_CPU_INTEL_PENTIUM_II = 0x1063,
B_CPU_INTEL_PENTIUM_II_MODEL_3 = 0x1063,
B_CPU_INTEL_PENTIUM_II_MODEL_5 = 0x1065,
B_CPU_INTEL_CELERON = 0x1066,
B_CPU_INTEL_CELERON_MODEL_22 = 0x11066,
B_CPU_INTEL_PENTIUM_III = 0x1067,
B_CPU_INTEL_PENTIUM_III_MODEL_8 = 0x1068,
B_CPU_INTEL_PENTIUM_M = 0x1069,
B_CPU_INTEL_PENTIUM_III_XEON = 0x106a,
B_CPU_INTEL_PENTIUM_III_MODEL_11 = 0x106b,
B_CPU_INTEL_ATOM = 0x1106c,
B_CPU_INTEL_PENTIUM_M_MODEL_13 = 0x106d, /* Dothan */
B_CPU_INTEL_PENTIUM_CORE,
B_CPU_INTEL_PENTIUM_CORE_2,
B_CPU_INTEL_PENTIUM_CORE_2_EXTREME = 0x11067, /* Core 2 Extreme or Xeon
model 23 on 45 nm */
B_CPU_INTEL_PENTIUM_IV = 0x10f0,
B_CPU_INTEL_PENTIUM_IV_MODEL_1,
B_CPU_INTEL_PENTIUM_IV_MODEL_2,
B_CPU_INTEL_PENTIUM_IV_MODEL_3,
B_CPU_INTEL_PENTIUM_IV_MODEL_4,
/* AMD */
/* Checked with "AMD Processor Recognition Application Note"
* (Table 3)
* 20734.pdf
*/
B_CPU_AMD_x86 = 0x1100,
B_CPU_AMD_K5_MODEL_0 = 0x1150,
B_CPU_AMD_K5_MODEL_1,
B_CPU_AMD_K5_MODEL_2,
B_CPU_AMD_K5_MODEL_3,
B_CPU_AMD_K6_MODEL_6 = 0x1156,
B_CPU_AMD_K6_MODEL_7 = 0x1157,
B_CPU_AMD_K6_MODEL_8 = 0x1158,
B_CPU_AMD_K6_2 = 0x1158,
B_CPU_AMD_K6_MODEL_9 = 0x1159,
B_CPU_AMD_K6_III = 0x1159,
B_CPU_AMD_K6_III_MODEL_13 = 0x115d,
B_CPU_AMD_ATHLON_MODEL_1 = 0x1161,
B_CPU_AMD_ATHLON_MODEL_2 = 0x1162,
B_CPU_AMD_DURON = 0x1163,
B_CPU_AMD_ATHLON_THUNDERBIRD = 0x1164,
B_CPU_AMD_ATHLON_XP = 0x1166,
B_CPU_AMD_ATHLON_XP_MODEL_7,
B_CPU_AMD_ATHLON_XP_MODEL_8,
B_CPU_AMD_ATHLON_XP_MODEL_10 = 0x116a, /* Barton */
B_CPU_AMD_SEMPRON_MODEL_8 = B_CPU_AMD_ATHLON_XP_MODEL_8,
B_CPU_AMD_SEMPRON_MODEL_10 = B_CPU_AMD_ATHLON_XP_MODEL_10,
/* According to "Revision Guide for AMD Family 10h
* Processors" (41322.pdf)
*/
B_CPU_AMD_PHENOM = 0x11f2,
/* According to "Revision guide for AMD Athlon 64
* and AMD Opteron Processors" (25759.pdf)
*/
B_CPU_AMD_ATHLON_64_MODEL_3 = 0x11f3,
B_CPU_AMD_ATHLON_64_MODEL_4,
B_CPU_AMD_ATHLON_64_MODEL_5,
B_CPU_AMD_OPTERON = B_CPU_AMD_ATHLON_64_MODEL_5,
B_CPU_AMD_ATHLON_64_FX = B_CPU_AMD_ATHLON_64_MODEL_5,
B_CPU_AMD_ATHLON_64_MODEL_7 = 0x11f7,
B_CPU_AMD_ATHLON_64_MODEL_8,
B_CPU_AMD_ATHLON_64_MODEL_11 = 0x11fb,
B_CPU_AMD_ATHLON_64_MODEL_12,
B_CPU_AMD_ATHLON_64_MODEL_14 = 0x11fe,
B_CPU_AMD_ATHLON_64_MODEL_15,
B_CPU_AMD_GEODE_LX = 0x115a,
/* VIA/Cyrix */
B_CPU_CYRIX_x86 = 0x1200,
B_CPU_VIA_CYRIX_x86 = 0x1200,
B_CPU_CYRIX_GXm = 0x1254,
B_CPU_CYRIX_6x86MX = 0x1260,
/* VIA/IDT */
B_CPU_IDT_x86 = 0x1300,
B_CPU_VIA_IDT_x86 = 0x1300,
B_CPU_IDT_WINCHIP_C6 = 0x1354,
B_CPU_IDT_WINCHIP_2 = 0x1358,
B_CPU_IDT_WINCHIP_3,
B_CPU_VIA_C3_SAMUEL = 0x1366,
B_CPU_VIA_C3_SAMUEL_2 = 0x1367,
B_CPU_VIA_C3_EZRA_T = 0x1368,
B_CPU_VIA_C3_NEHEMIAH = 0x1369,
/* Transmeta */
B_CPU_TRANSMETA_x86 = 0x1600,
B_CPU_TRANSMETA_CRUSOE = 0x1654,
/* Rise */
B_CPU_RISE_x86 = 0x1400,
B_CPU_RISE_mP6 = 0x1450,
/* National Semiconductor */
B_CPU_NATIONAL_x86 = 0x1500,
B_CPU_NATIONAL_GEODE_GX1 = 0x1554,
B_CPU_NATIONAL_GEODE_GX2,
/* For compatibility */
B_CPU_AMD_29K = 14,
B_CPU_x86,
B_CPU_MC6502,
B_CPU_Z80,
B_CPU_ALPHA,
B_CPU_MIPS,
B_CPU_HPPA,
B_CPU_M68K,
B_CPU_ARM,
B_CPU_SH,
B_CPU_SPARC
} cpu_type;
#define B_CPU_x86_VENDOR_MASK 0xff00
#ifdef __INTEL__
typedef union {
struct {
uint32 max_eax;
char vendor_id[12];
} eax_0;
struct {
uint32 stepping : 4;
uint32 model : 4;
uint32 family : 4;
uint32 type : 2;
uint32 reserved_0 : 2;
uint32 extended_model : 4;
uint32 extended_family : 8;
uint32 reserved_1 : 4;
uint32 brand_index : 8;
uint32 clflush : 8;
uint32 logical_cpus : 8;
uint32 apic_id : 8;
uint32 features;
uint32 extended_features;
} eax_1;
struct {
uint8 call_num;
uint8 cache_descriptors[15];
} eax_2;
struct {
uint32 reserved[2];
uint32 serial_number_high;
uint32 serial_number_low;
} eax_3;
char as_chars[16];
struct {
uint32 eax;
uint32 ebx;
uint32 edx;
uint32 ecx;
} regs;
} cpuid_info;
extern status_t get_cpuid(cpuid_info *info, uint32 eaxRegister, uint32 cpuNum);
#endif
typedef enum platform_types {
B_BEBOX_PLATFORM = 0,
B_MAC_PLATFORM,
B_AT_CLONE_PLATFORM,
B_ENIAC_PLATFORM,
B_APPLE_II_PLATFORM,
B_CRAY_PLATFORM,
B_LISA_PLATFORM,
B_TI_994A_PLATFORM,
B_TIMEX_SINCLAIR_PLATFORM,
B_ORAC_1_PLATFORM,
B_HAL_PLATFORM,
B_BESM_6_PLATFORM,
B_MK_61_PLATFORM,
B_NINTENDO_64_PLATFORM,
B_AMIGA_PLATFORM,
B_ATARI_PLATFORM
} platform_type;
typedef struct {
bigtime_t active_time; /* usec of doing useful work since boot */
} cpu_info;
typedef int32 machine_id[2]; /* unique machine ID */
typedef struct {
machine_id id; /* unique machine ID */
bigtime_t boot_time; /* time of boot (usecs since 1/1/1970) */
int32 cpu_count; /* number of cpus */
enum cpu_types cpu_type; /* type of cpu */
int32 cpu_revision; /* revision # of cpu */
cpu_info cpu_infos[B_MAX_CPU_COUNT]; /* info about individual cpus */
int64 cpu_clock_speed; /* processor clock speed (Hz) */
int64 bus_clock_speed; /* bus clock speed (Hz) */
enum platform_types platform_type; /* type of machine we're on */
int32 max_pages; /* total # physical pages */
int32 used_pages; /* # physical pages in use */
int32 page_faults; /* # of page faults */
int32 max_sems;
int32 used_sems;
int32 max_ports;
int32 used_ports;
int32 max_threads;
int32 used_threads;
int32 max_teams;
int32 used_teams;
char kernel_name[B_FILE_NAME_LENGTH]; /* name of kernel */
char kernel_build_date[B_OS_NAME_LENGTH]; /* date kernel built */
char kernel_build_time[B_OS_NAME_LENGTH]; /* time kernel built */
int64 kernel_version; /* version of this kernel */
bigtime_t _busy_wait_time; /* reserved for whatever */
int32 cached_pages;
int32 pad[3]; /* just in case... */
} system_info;
/* system private, use macro instead */
extern status_t _get_system_info(system_info *info, size_t size);
#define get_system_info(info) \
_get_system_info((info), sizeof(*(info)))
extern int32 is_computer_on(void);
extern double is_computer_on_fire(void);
/* WARNING: Experimental API! */
enum {
B_OBJECT_TYPE_FD = 0,
B_OBJECT_TYPE_SEMAPHORE = 1,
B_OBJECT_TYPE_PORT = 2,
B_OBJECT_TYPE_THREAD = 3
};
enum {
B_EVENT_READ = 0x0001, /* FD/port readable */
B_EVENT_WRITE = 0x0002, /* FD/port writable */
B_EVENT_ERROR = 0x0004, /* FD error */
B_EVENT_PRIORITY_READ = 0x0008, /* FD priority readable */
B_EVENT_PRIORITY_WRITE = 0x0010, /* FD priority writable */
B_EVENT_HIGH_PRIORITY_READ = 0x0020, /* FD high priority readable */
B_EVENT_HIGH_PRIORITY_WRITE = 0x0040, /* FD high priority writable */
B_EVENT_DISCONNECTED = 0x0080, /* FD disconnected */
B_EVENT_ACQUIRE_SEMAPHORE = 0x0001, /* semaphore can be acquired */
B_EVENT_INVALID = 0x1000 /* FD/port/sem/thread ID not or
no longer valid (e.g. has been
close/deleted) */
};
typedef struct object_wait_info {
int32 object; /* ID of the object */
uint16 type; /* type of the object */
uint16 events; /* events mask */
} object_wait_info;
/* wait_for_objects[_etc]() waits until at least one of the specified events or,
if given, the timeout occurred. When entering the function the
object_wait_info::events field specifies the events for each object the
caller is interested in. When the function returns the fields reflect the
events that actually occurred. The events B_EVENT_INVALID, B_EVENT_ERROR,
and B_EVENT_DISCONNECTED don't need to be specified. They will always be
reported, when they occur. */
extern ssize_t wait_for_objects(object_wait_info* infos, int numInfos);
extern ssize_t wait_for_objects_etc(object_wait_info* infos, int numInfos,
uint32 flags, bigtime_t timeout);
#ifdef __cplusplus
}
#endif
#endif /* _OS_H */
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