Bitcoin ABC 0.26.3
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secp256k1_preallocated.h
Go to the documentation of this file.
1#ifndef SECP256K1_PREALLOCATED_H
2#define SECP256K1_PREALLOCATED_H
3
4#include "secp256k1.h"
5
6#ifdef __cplusplus
7extern "C" {
8#endif
9
10/* The module provided by this header file is intended for settings in which it
11 * is not possible or desirable to rely on dynamic memory allocation. It provides
12 * functions for creating, cloning, and destroying secp256k1 context objects in a
13 * contiguous fixed-size block of memory provided by the caller.
14 *
15 * Context objects created by functions in this module can be used like contexts
16 * objects created by functions in secp256k1.h, i.e., they can be passed to any
17 * API function that expects a context object (see secp256k1.h for details). The
18 * only exception is that context objects created by functions in this module
19 * must be destroyed using secp256k1_context_preallocated_destroy (in this
20 * module) instead of secp256k1_context_destroy (in secp256k1.h).
21 *
22 * It is guaranteed that functions in this module will not call malloc or its
23 * friends realloc, calloc, and free.
24 */
25
36 unsigned int flags
38
65 void* prealloc,
66 unsigned int flags
68
78
97 void* prealloc
99
122);
123
124#ifdef __cplusplus
125}
126#endif
127
128#endif /* SECP256K1_PREALLOCATED_H */
secp256k1_context * ctx
int flags
T GetRand(T nMax=std::numeric_limits< T >::max()) noexcept
Generate a uniform random integer of type T in the range [0..nMax) nMax defaults to std::numeric_limi...
Definition random.h:85
#define SECP256K1_ARG_NONNULL(_x)
Definition secp256k1.h:155
#define SECP256K1_API
Definition secp256k1.h:140
#define SECP256K1_WARN_UNUSED_RESULT
Warning attributes NONNULL is not used if SECP256K1_BUILD is set to avoid the compiler optimizing out...
Definition secp256k1.h:150
SECP256K1_API void secp256k1_context_preallocated_destroy(secp256k1_context *ctx)
Destroy a secp256k1 context object that has been created in caller-provided memory.
Definition secp256k1.c:188
SECP256K1_API size_t secp256k1_context_preallocated_clone_size(const secp256k1_context *ctx) SECP256K1_ARG_NONNULL(1) SECP256K1_WARN_UNUSED_RESULT
Determine the memory size of a secp256k1 context object to be copied into caller-provided memory.
Definition secp256k1.c:106
SECP256K1_API secp256k1_context * secp256k1_context_preallocated_create(void *prealloc, unsigned int flags) SECP256K1_ARG_NONNULL(1) SECP256K1_WARN_UNUSED_RESULT
Create a secp256k1 context object in caller-provided memory.
Definition secp256k1.c:118
SECP256K1_API size_t secp256k1_context_preallocated_size(unsigned int flags) SECP256K1_WARN_UNUSED_RESULT
Determine the memory size of a secp256k1 context object to be created in caller-provided memory.
Definition secp256k1.c:86
SECP256K1_API secp256k1_context * secp256k1_context_preallocated_clone(const secp256k1_context *ctx, void *prealloc) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_WARN_UNUSED_RESULT
Copy a secp256k1 context object into caller-provided memory.
Definition secp256k1.c:163