62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
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/*
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* Copyright (c) 2012, Chris Andrews. All rights reserved.
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*/
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#include <stdint.h>
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#include <unistd.h>
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#define USDT_ARG_MAX 32
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typedef enum usdt_error {
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USDT_ERROR_MALLOC = 0,
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USDT_ERROR_VALLOC,
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USDT_ERROR_NOPROBES,
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USDT_ERROR_LOADDOF,
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USDT_ERROR_ALREADYENABLED,
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USDT_ERROR_UNLOADDOF,
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USDT_ERROR_DUP_PROBE,
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USDT_ERROR_REMOVE_PROBE
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} usdt_error_t;
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typedef struct usdt_probe {
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int (*isenabled_addr)(void);
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void *probe_addr;
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} usdt_probe_t;
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int usdt_is_enabled(usdt_probe_t *probe);
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void usdt_fire_probe(usdt_probe_t *probe, size_t argc, void **argv);
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typedef struct usdt_probedef {
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const char *name;
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const char *function;
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size_t argc;
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char *types[USDT_ARG_MAX];
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struct usdt_probe *probe;
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struct usdt_probedef *next;
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int refcnt;
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} usdt_probedef_t;
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usdt_probedef_t *usdt_create_probe(const char *func, const char *name,
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size_t argc, const char **types);
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void usdt_probe_release(usdt_probedef_t *probedef);
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typedef struct usdt_provider {
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const char *name;
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const char *module;
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usdt_probedef_t *probedefs;
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char *error;
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int enabled;
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void *file;
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} usdt_provider_t;
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usdt_provider_t *usdt_create_provider(const char *name, const char *module);
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int usdt_provider_add_probe(usdt_provider_t *provider, usdt_probedef_t *probedef);
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int usdt_provider_remove_probe(usdt_provider_t *provider, usdt_probedef_t *probedef);
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int usdt_provider_enable(usdt_provider_t *provider);
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int usdt_provider_disable(usdt_provider_t *provider);
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void usdt_provider_free(usdt_provider_t *provider);
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void usdt_error(usdt_provider_t *provider, usdt_error_t error, ...);
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char *usdt_errstr(usdt_provider_t *provider);
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