mirror of
https://github.com/wassname/ray.git
synced 2026-07-10 01:07:52 +08:00
Alexey Tumanov
6f9225490b
* plasma manager perf: speedup wait with a wait request object map * removing duplicate == operator in plasma store * fix serialization test * code cleanup * minor cleanup * factoring out uniqueid hash and equality operators into common * plasma manager: c++ify the WaitRequest struct * plasma manager: get rid of the initial object request malloc * cleanup * linting * cleanups and fix compiler warnings * compiler warnings and linting
64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
#include "common.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "io.h"
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#include <functional>
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/* This is used to define the array of object IDs. */
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const UT_icd object_id_icd = {sizeof(ObjectID), NULL, NULL, NULL};
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const UniqueID NIL_ID = {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255}};
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const unsigned char NIL_DIGEST[DIGEST_SIZE] = {0};
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UniqueID globally_unique_id(void) {
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/* Use /dev/urandom for "real" randomness. */
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int fd;
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int const flags = 0 /* for Windows compatibility */;
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if ((fd = open("/dev/urandom", O_RDONLY, flags)) == -1) {
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LOG_ERROR("Could not generate random number");
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}
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UniqueID result;
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CHECK(read_bytes(fd, &result.id[0], UNIQUE_ID_SIZE) >= 0);
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close(fd);
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return result;
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}
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/* ObjectID equality function. */
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bool operator==(const ObjectID &x, const ObjectID &y) {
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return UNIQUE_ID_EQ(x, y);
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}
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bool ObjectID_equal(ObjectID first_id, ObjectID second_id) {
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return UNIQUE_ID_EQ(first_id, second_id);
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}
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bool ObjectID_is_nil(ObjectID id) {
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return ObjectID_equal(id, NIL_OBJECT_ID);
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}
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bool DBClientID_equal(DBClientID first_id, DBClientID second_id) {
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return UNIQUE_ID_EQ(first_id, second_id);
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}
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char *ObjectID_to_string(ObjectID obj_id, char *id_string, int id_length) {
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CHECK(id_length >= ID_STRING_SIZE);
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static const char hex[] = "0123456789abcdef";
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char *buf = id_string;
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for (int i = 0; i < UNIQUE_ID_SIZE; i++) {
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unsigned int val = obj_id.id[i];
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*buf++ = hex[val >> 4];
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*buf++ = hex[val & 0xf];
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}
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*buf = '\0';
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return id_string;
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}
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