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utils.h
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/*
* utiltily functions and macros for uftrace
*
* Copyright (C) 2014-2017, LG Electronics, Namhyung Kim <[email protected]>
*
* Released under the GPL v2.
*/
#ifndef UFTRACE_UTILS_H
#define UFTRACE_UTILS_H
#include <ctype.h>
#include <endian.h>
#include <limits.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "compiler.h"
#ifndef container_of
#define container_of(ptr, type, member) \
({ \
const typeof(((type *)0)->member) *__mptr = (ptr); \
(type *)((char *)__mptr - offsetof(type, member)); \
})
#endif
#ifndef ALIGN
#define ALIGN(n, a) (((n) + (a)-1) & ~((a)-1))
#endif
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#define DIV_ROUND_UP(v, r) (((v) + (r)-1) / (r))
#define ROUND_UP(v, r) (DIV_ROUND_UP((v), (r)) * (r))
#define ROUND_DOWN(v, r) (((v) / (r)) * (r))
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#endif
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#define NSEC_PER_SEC 1000000000
#define NSEC_PER_MSEC 1000000
#define BUG_REPORT_MSG "Please report this bug to https://github.com/namhyung/uftrace/issues.\n\n"
extern int debug;
extern FILE *logfp;
extern FILE *outfp;
/* colored output for argspec display */
extern const char *color_reset;
extern const char *color_bold;
extern const char *color_string;
extern const char *color_symbol;
extern const char *color_struct;
extern const char *color_enum;
extern const char *color_enum_or;
/* must change DBG_DOMAIN_STR (in mcount.h) as well */
enum debug_domain {
DBG_UFTRACE = 0,
DBG_SYMBOL,
DBG_DEMANGLE,
DBG_FILTER,
DBG_FSTACK,
DBG_SESSION,
DBG_KERNEL,
DBG_MCOUNT,
DBG_PLTHOOK,
DBG_DYNAMIC,
DBG_EVENT,
DBG_SCRIPT,
DBG_DWARF,
DBG_WRAP,
DBG_DOMAIN_MAX,
};
extern int dbg_domain[DBG_DOMAIN_MAX];
enum color_setting {
COLOR_UNKNOWN,
COLOR_AUTO,
COLOR_OFF,
COLOR_ON,
};
enum format_mode {
FORMAT_NORMAL,
FORMAT_HTML,
};
#define COLOR_CODE_NORMAL '.'
#define COLOR_CODE_RESET '-'
#define COLOR_CODE_RED 'R'
#define COLOR_CODE_GREEN 'G'
#define COLOR_CODE_BLUE 'B'
#define COLOR_CODE_YELLOW 'Y'
#define COLOR_CODE_MAGENTA 'M'
#define COLOR_CODE_CYAN 'C'
#define COLOR_CODE_GRAY 'g'
#define COLOR_CODE_BOLD 'b'
#define DEFAULT_EVENT_COLOR COLOR_CODE_GREEN
extern void __pr_dbg(const char *fmt, ...);
extern void __pr_out(const char *fmt, ...);
extern void __pr_err(const char *fmt, ...) __attribute__((noreturn));
extern void __pr_err_s(const char *fmt, ...) __attribute__((noreturn));
extern void __pr_warn(const char *fmt, ...);
extern void __pr_color(char code, const char *fmt, ...);
extern enum color_setting log_color;
extern enum color_setting out_color;
extern enum format_mode format_mode;
extern void setup_color(enum color_setting color, char *pager);
extern void setup_signal(void);
#ifndef PR_FMT
#define PR_FMT "uftrace"
#endif
#ifndef PR_DOMAIN
#define PR_DOMAIN DBG_UFTRACE
#endif
#define pr_dbg(fmt, ...) \
({ \
if (dbg_domain[PR_DOMAIN]) \
__pr_dbg(PR_FMT ": " fmt, ##__VA_ARGS__); \
})
#define pr_dbg2(fmt, ...) \
({ \
if (dbg_domain[PR_DOMAIN] > 1) \
__pr_dbg(PR_FMT ": " fmt, ##__VA_ARGS__); \
})
#define pr_dbg3(fmt, ...) \
({ \
if (dbg_domain[PR_DOMAIN] > 2) \
__pr_dbg(PR_FMT ": " fmt, ##__VA_ARGS__); \
})
#define pr_dbg4(fmt, ...) \
({ \
if (dbg_domain[PR_DOMAIN] > 3) \
__pr_dbg(PR_FMT ": " fmt, ##__VA_ARGS__); \
})
#define pr_err(fmt, ...) \
__pr_err_s(PR_FMT ": %s:%d:%s\n ERROR: " fmt, __FILE__, __LINE__, __func__, ##__VA_ARGS__)
#define pr_err_ns(fmt, ...) \
__pr_err(PR_FMT ": %s:%d:%s\n ERROR: " fmt, __FILE__, __LINE__, __func__, ##__VA_ARGS__)
#define pr_warn(fmt, ...) __pr_warn("WARN: " fmt, ##__VA_ARGS__)
#define pr_out(fmt, ...) __pr_out(fmt, ##__VA_ARGS__)
#define pr_cont(fmt, ...) __pr_out(fmt, ##__VA_ARGS__)
#define pr_use(fmt, ...) __pr_out("Usage: " fmt, ##__VA_ARGS__)
#define pr_red(fmt, ...) __pr_color(COLOR_CODE_RED, fmt, ##__VA_ARGS__)
#define pr_green(fmt, ...) __pr_color(COLOR_CODE_GREEN, fmt, ##__VA_ARGS__)
#define pr_blue(fmt, ...) __pr_color(COLOR_CODE_BLUE, fmt, ##__VA_ARGS__)
#define pr_yellow(fmt, ...) __pr_color(COLOR_CODE_YELLOW, fmt, ##__VA_ARGS__)
#define pr_magenta(fmt, ...) __pr_color(COLOR_CODE_MAGENTA, fmt, ##__VA_ARGS__)
#define pr_cyan(fmt, ...) __pr_color(COLOR_CODE_CYAN, fmt, ##__VA_ARGS__)
#define pr_bold(fmt, ...) __pr_color(COLOR_CODE_BOLD, fmt, ##__VA_ARGS__)
#define pr_gray(fmt, ...) __pr_color(COLOR_CODE_GRAY, fmt, ##__VA_ARGS__)
#define pr_color(c, fmt, ...) __pr_color(c, fmt, ##__VA_ARGS__)
#define pr_flush() fflush(outfp)
#define xmalloc(sz) \
({ \
void *__ptr = malloc(sz); \
if (__ptr == NULL) { \
pr_err("xmalloc"); \
} \
__ptr; \
})
#define xzalloc(sz) \
({ \
void *__ptr = calloc(sz, 1); \
if (__ptr == NULL) { \
pr_err("xzalloc"); \
} \
__ptr; \
})
#define xcalloc(sz, n) \
({ \
void *__ptr = calloc(sz, n); \
if (__ptr == NULL) { \
pr_err("xcalloc"); \
} \
__ptr; \
})
#define xrealloc(p, n) \
({ \
void *__ptr = realloc(p, n); \
if (__ptr == NULL) { \
pr_err("xrealloc"); \
} \
__ptr; \
})
#define xstrdup(s) \
({ \
void *__ptr = strdup(s); \
if (__ptr == NULL) { \
pr_err("xstrdup"); \
} \
__ptr; \
})
#define xstrndup(s, sz) \
({ \
void *__ptr = strndup(s, sz); \
if (__ptr == NULL) { \
pr_err("xstrndup"); \
} \
__ptr; \
})
#define xasprintf(s, fmt, ...) \
({ \
int __ret = asprintf(s, fmt, ##__VA_ARGS__); \
if (__ret < 0) { \
pr_err("xasprintf"); \
} \
__ret; \
})
#define xvasprintf(s, fmt, ap) \
({ \
int __ret = vasprintf(s, fmt, ap); \
if (__ret < 0) { \
pr_err("xvasprintf"); \
} \
__ret; \
})
#define call_if_nonull(fptr, ...) \
({ \
if (fptr != NULL) \
fptr(__VA_ARGS__); \
})
#define stringify(s) __stringify(s)
#define __stringify(s) #s
#ifndef htonq
#define htonq(x) htobe64(x)
#endif
#ifndef ntohq
#define ntohq(x) be64toh(x)
#endif
/* this comes from /usr/include/elf.h */
#ifndef ELFDATA2LSB
#define ELFDATA2LSB 1 /* 2's complement, little endian */
#define ELFDATA2MSB 2 /* 2's complement, big endian */
#endif
#ifndef ELFCLASS32
#define ELFCLASSNONE 0
#define ELFCLASS32 1
#define ELFCLASS64 2
#endif
static inline int get_elf_endian(void)
{
#if __BYTE_ORDER == __LITTLE_ENDIAN
return ELFDATA2LSB;
#else
return ELFDATA2MSB;
#endif
}
static inline int get_elf_class(void)
{
if (sizeof(long) == 4)
return ELFCLASS32;
else if (sizeof(long) == 8)
return ELFCLASS64;
else
return ELFCLASSNONE;
}
static inline bool host_is_lp64(void)
{
return get_elf_class() == ELFCLASS64;
}
static inline const char *get_endian_str(void)
{
if (get_elf_endian() == ELFDATA2LSB)
return "LE";
else
return "BE";
}
static inline char *has_kernel_opt(char *buf)
{
int idx = 0;
if (!strncasecmp(buf, "kernel", 6))
idx = 6;
else if (!strncasecmp(buf, "k", 1))
idx = 1;
if (idx && (buf[idx] == '\0' || buf[idx] == ','))
return buf;
return NULL;
}
static inline char *has_kernel_filter(char *buf)
{
char *opt = strchr(buf, '@');
if (opt && has_kernel_opt(opt + 1))
return opt;
return NULL;
}
struct uftrace_time_range {
uint64_t first;
uint64_t start;
uint64_t stop;
bool start_elapsed;
bool stop_elapsed;
bool kernel_skip_out;
bool event_skip_out;
};
struct iovec;
int read_all(int fd, void *buf, size_t size);
int pread_all(int fd, void *buf, size_t size, off_t off);
int fread_all(void *byf, size_t size, FILE *fp);
int write_all(int fd, const void *buf, size_t size);
int writev_all(int fd, struct iovec *iov, int count);
int fwrite_all(const void *buf, size_t size, FILE *fp);
int create_directory(const char *dirname);
int remove_directory(const char *dirname);
int chown_directory(const char *dirname);
char *read_exename(void);
extern clockid_t clock_source;
void setup_clock_id(const char *clock_str);
void print_time_unit(uint64_t delta_nsec);
void print_diff_percent(uint64_t base_nsec, uint64_t delta_nsec);
void print_diff_time_unit(uint64_t base_nsec, uint64_t pair_nsec);
void print_diff_count(uint64_t base, uint64_t pair);
char *setup_pager(void);
void start_pager(char *pager);
void wait_for_pager(void);
bool check_time_range(struct uftrace_time_range *range, uint64_t timestamp);
uint64_t parse_time(char *arg, int limited_digits);
uint64_t parse_timestamp(char *arg);
char *strjoin(char *left, char *right, const char *delim);
char *json_quote(char *str, int *len);
/* strv - string vector */
struct strv {
int nr; /* actual allocation is (nr + 1) */
char **p; /* terminated by NULL (like argv[]) */
};
#define STRV_INIT \
(struct strv) \
{ \
.nr = 0, .p = NULL, \
}
#define strv_for_each(strv, s, i) for (i = 0; i < (strv)->nr && ((s) = (strv)->p[i]); i++)
void strv_split(struct strv *strv, const char *str, const char *delim);
void strv_copy(struct strv *strv, int argc, char *argv[]);
void strv_append(struct strv *strv, const char *str);
void strv_replace(struct strv *strv, int idx, const char *str);
char *strv_join(struct strv *strv, const char *delim);
void strv_free(struct strv *strv);
char *str_ltrim(char *str);
char *str_rtrim(char *str);
char **parse_cmdline(char *cmd, int *argc);
void free_parsed_cmdline(char **argv);
struct uftrace_data;
char *absolute_dirname(const char *path, char *resolved_path);
char *uftrace_strerror(int errnum, char *buf, size_t buflen);
void stacktrace(void);
#if defined(__x86_64__) || defined(__i386__)
#define TRAP() asm volatile("int $3")
#else
#define TRAP() raise(SIGTRAP)
#endif
#define DTRAP() \
if (DEBUG_MODE) { \
TRAP(); \
}
#define ASSERT(cond) \
if (unlikely(!(cond))) { \
pr_red("%s:%d: %s: ASSERT `%s' failed.\n", __FILE__, __LINE__, __func__, #cond); \
stacktrace(); \
pr_red(BUG_REPORT_MSG); \
pr_flush(); \
TRAP(); \
}
#define DASSERT(cond) \
if (DEBUG_MODE && unlikely(!(cond))) { \
pr_red("%s:%d: %s: DEBUG ASSERT `%s' failed.\n", __FILE__, __LINE__, __func__, \
#cond); \
stacktrace(); \
pr_red(BUG_REPORT_MSG); \
pr_flush(); \
TRAP(); \
}
int copy_file(const char *path_in, const char *path_out);
#endif /* UFTRACE_UTILS_H */