projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 808cb744 JR |
1 | /* |
| 2 | * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: LGPL-2.1-only | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef LTTNG_KERNEL_PROBE_H | |
| 9 | #define LTTNG_KERNEL_PROBE_H | |
| 10 | ||
| 11 | #include <stdint.h> | |
| 12 | ||
| 13 | #ifdef __cplusplus | |
| 14 | extern "C" { | |
| 15 | #endif | |
| 16 | ||
| 17 | struct lttng_kernel_probe_location; | |
| 18 | ||
| 19 | enum lttng_kernel_probe_location_status { | |
| 20 | LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK = 0, | |
| 21 | /* Invalid parameters provided. */ | |
| 22 | LTTNG_KERNEL_PROBE_LOCATION_STATUS_INVALID = -1, | |
| 23 | }; | |
| 24 | ||
| 25 | enum lttng_kernel_probe_location_type { | |
| 26 | LTTNG_KERNEL_PROBE_LOCATION_TYPE_UNKNOWN = -1, | |
| 27 | /* Location derived from a symbol and an offset. */ | |
| 28 | LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET = 0, | |
| 29 | /* Location derived from an address. */ | |
| 30 | LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS = 1, | |
| 31 | }; | |
| 32 | ||
| 33 | /* | |
| 34 | * Get the type of the kernel probe location. | |
| 35 | */ | |
| 36 | extern enum lttng_kernel_probe_location_type | |
| 37 | lttng_kernel_probe_location_get_type( | |
| 38 | const struct lttng_kernel_probe_location *location); | |
| 39 | ||
| 40 | /* | |
| 41 | * Destroy the kernel probe location. | |
| 42 | */ | |
| 43 | extern void lttng_kernel_probe_location_destroy( | |
| 44 | struct lttng_kernel_probe_location *location); | |
| 45 | ||
| 46 | /* | |
| 47 | * Create a symbol derived probe location. | |
| 48 | * On failure, NULL is returned. | |
| 49 | */ | |
| 50 | extern struct lttng_kernel_probe_location * | |
| 51 | lttng_kernel_probe_location_symbol_create(const char *symbol_name, | |
| 52 | uint64_t offset); | |
| 53 | ||
| 54 | /* | |
| 55 | * Get the symbol name of a symbol derived probe location. | |
| 56 | */ | |
| 57 | extern const char *lttng_kernel_probe_location_symbol_get_name( | |
| 58 | const struct lttng_kernel_probe_location *location); | |
| 59 | ||
| 60 | /* | |
| 61 | * Get the offset of a symbol derived location. | |
| 62 | */ | |
| 63 | extern enum lttng_kernel_probe_location_status | |
| 64 | lttng_kernel_probe_location_symbol_get_offset( | |
| 65 | const struct lttng_kernel_probe_location *location, | |
| 66 | uint64_t *offset); | |
| 67 | ||
| 68 | /* | |
| 69 | * Create an address derived probe location. | |
| 70 | * On failure, NULL is returned. | |
| 71 | */ | |
| 72 | extern struct lttng_kernel_probe_location * | |
| 73 | lttng_kernel_probe_location_address_create(uint64_t address); | |
| 74 | ||
| 75 | /* | |
| 76 | * Get the address of an address derived probe location. | |
| 77 | */ | |
| 78 | extern enum lttng_kernel_probe_location_status | |
| 79 | lttng_kernel_probe_location_address_get_address( | |
| 80 | const struct lttng_kernel_probe_location *location, | |
| 81 | uint64_t *offset); | |
| 82 | ||
| 83 | #ifdef __cplusplus | |
| 84 | } | |
| 85 | #endif | |
| 86 | ||
| 87 | #endif /* LTTNG_KERNEL_PROBE_H */ |