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Diffstat (limited to 'include/lib/capnp-c/capnp_c.h')
| -rw-r--r-- | include/lib/capnp-c/capnp_c.h | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/include/lib/capnp-c/capnp_c.h b/include/lib/capnp-c/capnp_c.h deleted file mode 100644 index 28f171d..0000000 --- a/include/lib/capnp-c/capnp_c.h +++ /dev/null @@ -1,446 +0,0 @@ -/* vim: set sw=8 ts=8 sts=8 noet: */ -/* capnp_c.h - * - * Copyright (C) 2013 James McKaskill - * Copyright (C) 2014 Steve Dee - * - * This software may be modified and distributed under the terms - * of the MIT license. See the LICENSE file for details. - */ - -#ifndef CAPNP_C_H -#define CAPNP_C_H - -#include <stdint.h> -#include <stdio.h> -#include <unistd.h> - -#if defined(unix) && !defined(__APPLE__) -#include <endian.h> -#endif - -/* ssize_t is a POSIX type, not an ISO C one... - * Windows seems to only have SSIZE_T in BaseTsd.h - */ -#ifdef _MSC_VER -typedef intmax_t ssize_t; -#else -#include <stddef.h> -#endif - -// AVR does not have ssize_T either -#ifdef MULTIPASS_ARCH_arduino_nano -typedef intmax_t ssize_t; -#endif - -// Cross-platform macro ALIGNED_(x) aligns a struct by `x` bytes. -#ifdef _MSC_VER -#define ALIGNED_(x) __declspec(align(x)) -#endif -#ifdef __GNUC__ -#define ALIGNED_(x) __attribute__ ((aligned(x))) -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -#if defined(__cplusplus) || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) -#define CAPN_INLINE static inline -#else -#define CAPN_INLINE static -#endif - -#define CAPN_VERSION 1 - -/* struct capn is a common structure shared between segments in the same - * session/context so that far pointers between segments will be created. - * - * lookup is used to lookup segments by id when derefencing a far pointer - * - * create is used to create or lookup an alternate segment that has at least - * sz available (ie returned seg->len + sz <= seg->cap) - * - * create_local is used to create a segment for the copy tree and should be - * allocated in the local memory space. - * - * Allocated segments must be zero initialized. - * - * create and lookup can be NULL if you don't need multiple segments and don't - * want to support copying - * - * seglist and copylist are linked lists which can be used to free up segments - * on cleanup, but should not be modified by the user. - * - * lookup, create, create_local, and user can be set by the user. Other values - * should be zero initialized. - */ -struct capn { - /* user settable */ - struct capn_segment *(*lookup)(void* /*user*/, uint32_t /*id */); - struct capn_segment *(*create)(void* /*user*/, uint32_t /*id */, int /*sz*/); - struct capn_segment *(*create_local)(void* /*user*/, int /*sz*/); - void *user; - /* zero initialized, user should not modify */ - uint32_t segnum; - struct capn_tree *copy; - struct capn_tree *segtree; - struct capn_segment *seglist, *lastseg; - struct capn_segment *copylist; -}; - -/* struct capn_tree is a rb tree header used internally for the segment id - * lookup and copy tree */ -struct capn_tree { - struct capn_tree *parent, *link[2]; - unsigned int red : 1; -}; - -struct capn_tree *capn_tree_insert(struct capn_tree *root, struct capn_tree *n); - -/* struct capn_segment contains the information about a single segment. - * - * capn points to a struct capn that is shared between segments in the - * same session - * - * id specifies the segment id, used for far pointers - * - * data specifies the segment data. This should not move after creation. - * - * len specifies the current segment length. This is 0 for a blank - * segment. - * - * cap specifies the segment capacity. - * - * When creating new structures len will be incremented until it reaches cap, - * at which point a new segment will be requested via capn->create. The - * create callback can either create a new segment or expand an existing - * one by incrementing cap and returning the expanded segment. - * - * data, len, and cap must all be 8 byte aligned, hence the ALIGNED_(8) macro - * on the struct definition. - * - * data, len, cap, and user should all be set by the user. Other values - * should be zero initialized. - */ - -struct ALIGNED_(8) capn_segment { - struct capn_tree hdr; - struct capn_segment *next; - struct capn *capn; - uint32_t id; - /* user settable */ - char *data; - size_t len, cap; - void *user; -}; - -enum CAPN_TYPE { - CAPN_NULL = 0, - CAPN_STRUCT = 1, - CAPN_LIST = 2, - CAPN_PTR_LIST = 3, - CAPN_BIT_LIST = 4, - CAPN_FAR_POINTER = 5, -}; - -struct capn_ptr { - unsigned int type : 4; - unsigned int has_ptr_tag : 1; - unsigned int is_list_member : 1; - unsigned int is_composite_list : 1; - unsigned int datasz : 19; - unsigned int ptrs : 16; - int len; - char *data; - struct capn_segment *seg; -}; - -struct capn_text { - int len; - const char *str; - struct capn_segment *seg; -}; - -typedef struct capn_ptr capn_ptr; -typedef struct capn_text capn_text; -typedef struct {capn_ptr p;} capn_data; -typedef struct {capn_ptr p;} capn_list1; -typedef struct {capn_ptr p;} capn_list8; -typedef struct {capn_ptr p;} capn_list16; -typedef struct {capn_ptr p;} capn_list32; -typedef struct {capn_ptr p;} capn_list64; - -struct capn_msg { - struct capn_segment *seg; - uint64_t iface; - uint16_t method; - capn_ptr args; -}; - -/* capn_append_segment appends a segment to a session */ -void capn_append_segment(struct capn*, struct capn_segment*); - -capn_ptr capn_root(struct capn *c); -void capn_resolve(capn_ptr *p); - -#define capn_len(list) ((list).p.type == CAPN_FAR_POINTER ? (capn_resolve(&(list).p), (list).p.len) : (list).p.len) - -/* capn_getp|setp functions get/set ptrs in list/structs - * off is the list index or pointer index in a struct - * capn_setp will copy the data, create far pointers, etc if the target - * is in a different segment/context. - * Both of these will use/return inner pointers for composite lists. - */ -capn_ptr capn_getp(capn_ptr p, int off, int resolve); -int capn_setp(capn_ptr p, int off, capn_ptr tgt); - -capn_text capn_get_text(capn_ptr p, int off, capn_text def); -capn_data capn_get_data(capn_ptr p, int off); -int capn_set_text(capn_ptr p, int off, capn_text tgt); -/* there is no set_data -- use capn_new_list8 + capn_setv8 instead - * and set data.p = list.p */ - -/* capn_get* functions get data from a list - * The length of the list is given by p->size - * off specifies how far into the list to start - * sz indicates the number of elements to get - * The function returns the number of elements read or -1 on an error. - * off must be byte aligned for capn_getv1 - */ -int capn_get1(capn_list1 p, int off); -uint8_t capn_get8(capn_list8 p, int off); -uint16_t capn_get16(capn_list16 p, int off); -uint32_t capn_get32(capn_list32 p, int off); -uint64_t capn_get64(capn_list64 p, int off); -int capn_getv1(capn_list1 p, int off, uint8_t *data, int sz); -int capn_getv8(capn_list8 p, int off, uint8_t *data, int sz); -int capn_getv16(capn_list16 p, int off, uint16_t *data, int sz); -int capn_getv32(capn_list32 p, int off, uint32_t *data, int sz); -int capn_getv64(capn_list64 p, int off, uint64_t *data, int sz); - -/* capn_set* functions set data in a list - * off specifies how far into the list to start - * sz indicates the number of elements to write - * The function returns the number of elemnts written or -1 on an error. - * off must be byte aligned for capn_setv1 - */ -int capn_set1(capn_list1 p, int off, int v); -int capn_set8(capn_list8 p, int off, uint8_t v); -int capn_set16(capn_list16 p, int off, uint16_t v); -int capn_set32(capn_list32 p, int off, uint32_t v); -int capn_set64(capn_list64 p, int off, uint64_t v); -int capn_setv1(capn_list1 p, int off, const uint8_t *data, int sz); -int capn_setv8(capn_list8 p, int off, const uint8_t *data, int sz); -int capn_setv16(capn_list16 p, int off, const uint16_t *data, int sz); -int capn_setv32(capn_list32 p, int off, const uint32_t *data, int sz); -int capn_setv64(capn_list64 p, int off, const uint64_t *data, int sz); - -/* capn_new_* functions create a new object - * datasz is in bytes, ptrs is # of pointers, sz is # of elements in the list - * On an error a CAPN_NULL pointer is returned - */ -capn_ptr capn_new_string(struct capn_segment *seg, const char *str, ssize_t sz); -capn_ptr capn_new_struct(struct capn_segment *seg, int datasz, int ptrs); -capn_ptr capn_new_interface(struct capn_segment *seg, int datasz, int ptrs); -capn_ptr capn_new_ptr_list(struct capn_segment *seg, int sz); -capn_ptr capn_new_list(struct capn_segment *seg, int sz, int datasz, int ptrs); -capn_list1 capn_new_list1(struct capn_segment *seg, int sz); -capn_list8 capn_new_list8(struct capn_segment *seg, int sz); -capn_list16 capn_new_list16(struct capn_segment *seg, int sz); -capn_list32 capn_new_list32(struct capn_segment *seg, int sz); -capn_list64 capn_new_list64(struct capn_segment *seg, int sz); - -/* capn_read|write* functions read/write struct values - * off is the offset into the structure in bytes - * Rarely should these be called directly, instead use the generated code. - * Data must be xored with the default value - * These are inlined - */ -CAPN_INLINE uint8_t capn_read8(capn_ptr p, int off); -CAPN_INLINE uint16_t capn_read16(capn_ptr p, int off); -CAPN_INLINE uint32_t capn_read32(capn_ptr p, int off); -CAPN_INLINE uint64_t capn_read64(capn_ptr p, int off); -CAPN_INLINE int capn_write1(capn_ptr p, int off, int val); -CAPN_INLINE int capn_write8(capn_ptr p, int off, uint8_t val); -CAPN_INLINE int capn_write16(capn_ptr p, int off, uint16_t val); -CAPN_INLINE int capn_write32(capn_ptr p, int off, uint32_t val); -CAPN_INLINE int capn_write64(capn_ptr p, int off, uint64_t val); - -/* capn_init_malloc inits the capn struct with a create function which - * allocates segments on the heap using malloc - * - * capn_init_(fp|mem) inits by reading segments in from the file/memory buffer - * in serialized form (optionally packed). It will then setup the create - * function ala capn_init_malloc so that further segments can be created. - * - * capn_free frees all the segment headers and data created by the create - * function setup by capn_init_* - */ -void capn_init_malloc(struct capn *c); -int capn_init_fp(struct capn *c, FILE *f, int packed); -int capn_init_mem(struct capn *c, const uint8_t *p, size_t sz, int packed); - -/* capn_write_(fp|mem) writes segments to the file/memory buffer in - * serialized form and returns the number of bytes written. - */ -/* TODO */ -/*int capn_write_fp(struct capn *c, FILE *f, int packed);*/ -int capn_write_fd(struct capn *c, ssize_t (*write_fd)(int fd, const void *p, size_t count), int fd, int packed); -int capn_write_mem(struct capn *c, uint8_t *p, size_t sz, int packed); - -void capn_free(struct capn *c); -void capn_reset_copy(struct capn *c); - -/* Inline functions */ - - -CAPN_INLINE uint8_t capn_flip8(uint8_t v) { - return v; -} -CAPN_INLINE uint16_t capn_flip16(uint16_t v) { -#if defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN) - return v; -#elif defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN) && \ - defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 8 - return __builtin_bswap16(v); -#else - union { uint16_t u; uint8_t v[2]; } s; - s.v[0] = (uint8_t)v; - s.v[1] = (uint8_t)(v>>8); - return s.u; -#endif -} -CAPN_INLINE uint32_t capn_flip32(uint32_t v) { -#if defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN) - return v; -#elif defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN) && \ - defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 8 - return __builtin_bswap32(v); -#else - union { uint32_t u; uint8_t v[4]; } s; - s.v[0] = (uint8_t)v; - s.v[1] = (uint8_t)(v>>8); - s.v[2] = (uint8_t)(v>>16); - s.v[3] = (uint8_t)(v>>24); - return s.u; -#endif -} -CAPN_INLINE uint64_t capn_flip64(uint64_t v) { -#if defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN) - return v; -#elif defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN) && \ - defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 8 - return __builtin_bswap64(v); -#else - union { uint64_t u; uint8_t v[8]; } s; - s.v[0] = (uint8_t)v; - s.v[1] = (uint8_t)(v>>8); - s.v[2] = (uint8_t)(v>>16); - s.v[3] = (uint8_t)(v>>24); - s.v[4] = (uint8_t)(v>>32); - s.v[5] = (uint8_t)(v>>40); - s.v[6] = (uint8_t)(v>>48); - s.v[7] = (uint8_t)(v>>56); - return s.u; -#endif -} - -CAPN_INLINE int capn_write1(capn_ptr p, int off, int val) { - if (off >= p.datasz*8) { - return -1; - } else if (val) { - uint8_t tmp = (uint8_t)(1 << (off & 7)); - ((uint8_t*) p.data)[off >> 3] |= tmp; - return 0; - } else { - uint8_t tmp = (uint8_t)(~(1 << (off & 7))); - ((uint8_t*) p.data)[off >> 3] &= tmp; - return 0; - } -} - -CAPN_INLINE uint8_t capn_read8(capn_ptr p, int off) { - return off+1 <= p.datasz ? capn_flip8(*(uint8_t*) (p.data+off)) : 0; -} -CAPN_INLINE int capn_write8(capn_ptr p, int off, uint8_t val) { - if (off+1 <= p.datasz) { - *(uint8_t*) (p.data+off) = capn_flip8(val); - return 0; - } else { - return -1; - } -} - -CAPN_INLINE uint16_t capn_read16(capn_ptr p, int off) { - return off+2 <= p.datasz ? capn_flip16(*(uint16_t*) (p.data+off)) : 0; -} -CAPN_INLINE int capn_write16(capn_ptr p, int off, uint16_t val) { - if (off+2 <= p.datasz) { - *(uint16_t*) (p.data+off) = capn_flip16(val); - return 0; - } else { - return -1; - } -} - -CAPN_INLINE uint32_t capn_read32(capn_ptr p, int off) { - return off+4 <= p.datasz ? capn_flip32(*(uint32_t*) (p.data+off)) : 0; -} -CAPN_INLINE int capn_write32(capn_ptr p, int off, uint32_t val) { - if (off+4 <= p.datasz) { - *(uint32_t*) (p.data+off) = capn_flip32(val); - return 0; - } else { - return -1; - } -} - -CAPN_INLINE uint64_t capn_read64(capn_ptr p, int off) { - return off+8 <= p.datasz ? capn_flip64(*(uint64_t*) (p.data+off)) : 0; -} -CAPN_INLINE int capn_write64(capn_ptr p, int off, uint64_t val) { - if (off+8 <= p.datasz) { - *(uint64_t*) (p.data+off) = capn_flip64(val); - return 0; - } else { - return -1; - } -} - -union capn_conv_f32 { - uint32_t u; - float f; -}; - -union capn_conv_f64 { - uint64_t u; - double f; -}; - -CAPN_INLINE float capn_to_f32(uint32_t v) { - union capn_conv_f32 u; - u.u = v; - return u.f; -} -CAPN_INLINE double capn_to_f64(uint64_t v) { - union capn_conv_f64 u; - u.u = v; - return u.f; -} -CAPN_INLINE uint32_t capn_from_f32(float v) { - union capn_conv_f32 u; - u.f = v; - return u.u; -} -CAPN_INLINE uint64_t capn_from_f64(double v) { - union capn_conv_f64 u; - u.f = v; - return u.u; -} - -#ifdef __cplusplus -} -#endif - -#endif |