728 lines
16 KiB
C
728 lines
16 KiB
C
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#include <sys/sysmacros.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <byteswap.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include "util.h"
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#include "event.h"
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#include "debug.h"
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#include "evlist.h"
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#include "symbol.h"
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#include "strlist.h"
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#include <elf.h>
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#include "tsc.h"
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#include "session.h"
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#include "jit.h"
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#include "jitdump.h"
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#include "genelf.h"
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#include "../builtin.h"
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struct jit_buf_desc {
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struct perf_data_file *output;
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struct perf_session *session;
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struct machine *machine;
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union jr_entry *entry;
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void *buf;
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uint64_t sample_type;
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size_t bufsize;
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FILE *in;
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bool needs_bswap; /* handles cross-endianess */
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bool use_arch_timestamp;
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void *debug_data;
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size_t nr_debug_entries;
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uint32_t code_load_count;
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u64 bytes_written;
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struct rb_root code_root;
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char dir[PATH_MAX];
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};
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struct debug_line_info {
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unsigned long vma;
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unsigned int lineno;
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/* The filename format is unspecified, absolute path, relative etc. */
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char const filename[0];
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};
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struct jit_tool {
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struct perf_tool tool;
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struct perf_data_file output;
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struct perf_data_file input;
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u64 bytes_written;
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};
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#define hmax(a, b) ((a) > (b) ? (a) : (b))
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#define get_jit_tool(t) (container_of(tool, struct jit_tool, tool))
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static int
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jit_emit_elf(char *filename,
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const char *sym,
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uint64_t code_addr,
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const void *code,
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int csize,
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void *debug,
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int nr_debug_entries)
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{
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int ret, fd;
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if (verbose > 0)
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fprintf(stderr, "write ELF image %s\n", filename);
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fd = open(filename, O_CREAT|O_TRUNC|O_WRONLY, 0644);
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if (fd == -1) {
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pr_warning("cannot create jit ELF %s: %s\n", filename, strerror(errno));
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return -1;
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}
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ret = jit_write_elf(fd, code_addr, sym, (const void *)code, csize, debug, nr_debug_entries);
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close(fd);
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if (ret)
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unlink(filename);
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return ret;
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}
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static void
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jit_close(struct jit_buf_desc *jd)
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{
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if (!(jd && jd->in))
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return;
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funlockfile(jd->in);
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fclose(jd->in);
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jd->in = NULL;
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}
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static int
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jit_validate_events(struct perf_session *session)
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{
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struct perf_evsel *evsel;
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/*
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* check that all events use CLOCK_MONOTONIC
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*/
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evlist__for_each_entry(session->evlist, evsel) {
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if (evsel->attr.use_clockid == 0 || evsel->attr.clockid != CLOCK_MONOTONIC)
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return -1;
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}
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return 0;
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}
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static int
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jit_open(struct jit_buf_desc *jd, const char *name)
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{
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struct jitheader header;
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struct jr_prefix *prefix;
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ssize_t bs, bsz = 0;
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void *n, *buf = NULL;
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int ret, retval = -1;
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jd->in = fopen(name, "r");
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if (!jd->in)
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return -1;
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bsz = hmax(sizeof(header), sizeof(*prefix));
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buf = malloc(bsz);
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if (!buf)
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goto error;
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/*
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* protect from writer modifying the file while we are reading it
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*/
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flockfile(jd->in);
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ret = fread(buf, sizeof(header), 1, jd->in);
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if (ret != 1)
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goto error;
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memcpy(&header, buf, sizeof(header));
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if (header.magic != JITHEADER_MAGIC) {
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if (header.magic != JITHEADER_MAGIC_SW)
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goto error;
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jd->needs_bswap = true;
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}
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if (jd->needs_bswap) {
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header.version = bswap_32(header.version);
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header.total_size = bswap_32(header.total_size);
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header.pid = bswap_32(header.pid);
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header.elf_mach = bswap_32(header.elf_mach);
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header.timestamp = bswap_64(header.timestamp);
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header.flags = bswap_64(header.flags);
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}
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jd->use_arch_timestamp = header.flags & JITDUMP_FLAGS_ARCH_TIMESTAMP;
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if (verbose > 2)
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pr_debug("version=%u\nhdr.size=%u\nts=0x%llx\npid=%d\nelf_mach=%d\nuse_arch_timestamp=%d\n",
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header.version,
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header.total_size,
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(unsigned long long)header.timestamp,
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header.pid,
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header.elf_mach,
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jd->use_arch_timestamp);
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if (header.flags & JITDUMP_FLAGS_RESERVED) {
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pr_err("jitdump file contains invalid or unsupported flags 0x%llx\n",
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(unsigned long long)header.flags & JITDUMP_FLAGS_RESERVED);
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goto error;
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}
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if (jd->use_arch_timestamp && !jd->session->time_conv.time_mult) {
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pr_err("jitdump file uses arch timestamps but there is no timestamp conversion\n");
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goto error;
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}
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/*
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* validate event is using the correct clockid
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*/
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if (!jd->use_arch_timestamp && jit_validate_events(jd->session)) {
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pr_err("error, jitted code must be sampled with perf record -k 1\n");
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goto error;
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}
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bs = header.total_size - sizeof(header);
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if (bs > bsz) {
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n = realloc(buf, bs);
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if (!n)
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goto error;
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bsz = bs;
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buf = n;
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/* read extra we do not know about */
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ret = fread(buf, bs - bsz, 1, jd->in);
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if (ret != 1)
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goto error;
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}
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/*
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* keep dirname for generating files and mmap records
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*/
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strcpy(jd->dir, name);
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dirname(jd->dir);
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return 0;
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error:
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funlockfile(jd->in);
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fclose(jd->in);
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return retval;
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}
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static union jr_entry *
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jit_get_next_entry(struct jit_buf_desc *jd)
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{
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struct jr_prefix *prefix;
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union jr_entry *jr;
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void *addr;
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size_t bs, size;
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int id, ret;
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if (!(jd && jd->in))
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return NULL;
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if (jd->buf == NULL) {
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size_t sz = getpagesize();
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if (sz < sizeof(*prefix))
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sz = sizeof(*prefix);
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jd->buf = malloc(sz);
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if (jd->buf == NULL)
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return NULL;
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jd->bufsize = sz;
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}
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prefix = jd->buf;
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/*
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* file is still locked at this point
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*/
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ret = fread(prefix, sizeof(*prefix), 1, jd->in);
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if (ret != 1)
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return NULL;
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if (jd->needs_bswap) {
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prefix->id = bswap_32(prefix->id);
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prefix->total_size = bswap_32(prefix->total_size);
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prefix->timestamp = bswap_64(prefix->timestamp);
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}
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id = prefix->id;
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size = prefix->total_size;
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bs = (size_t)size;
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if (bs < sizeof(*prefix))
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return NULL;
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if (id >= JIT_CODE_MAX) {
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pr_warning("next_entry: unknown prefix %d, skipping\n", id);
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return NULL;
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}
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if (bs > jd->bufsize) {
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void *n;
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n = realloc(jd->buf, bs);
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if (!n)
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return NULL;
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jd->buf = n;
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jd->bufsize = bs;
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}
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addr = ((void *)jd->buf) + sizeof(*prefix);
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ret = fread(addr, bs - sizeof(*prefix), 1, jd->in);
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if (ret != 1)
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return NULL;
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jr = (union jr_entry *)jd->buf;
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switch(id) {
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case JIT_CODE_DEBUG_INFO:
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if (jd->needs_bswap) {
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uint64_t n;
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jr->info.code_addr = bswap_64(jr->info.code_addr);
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jr->info.nr_entry = bswap_64(jr->info.nr_entry);
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for (n = 0 ; n < jr->info.nr_entry; n++) {
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jr->info.entries[n].addr = bswap_64(jr->info.entries[n].addr);
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jr->info.entries[n].lineno = bswap_32(jr->info.entries[n].lineno);
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jr->info.entries[n].discrim = bswap_32(jr->info.entries[n].discrim);
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}
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}
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break;
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case JIT_CODE_CLOSE:
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break;
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case JIT_CODE_LOAD:
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if (jd->needs_bswap) {
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jr->load.pid = bswap_32(jr->load.pid);
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jr->load.tid = bswap_32(jr->load.tid);
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jr->load.vma = bswap_64(jr->load.vma);
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jr->load.code_addr = bswap_64(jr->load.code_addr);
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jr->load.code_size = bswap_64(jr->load.code_size);
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jr->load.code_index= bswap_64(jr->load.code_index);
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}
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jd->code_load_count++;
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break;
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case JIT_CODE_MOVE:
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if (jd->needs_bswap) {
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jr->move.pid = bswap_32(jr->move.pid);
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jr->move.tid = bswap_32(jr->move.tid);
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jr->move.vma = bswap_64(jr->move.vma);
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jr->move.old_code_addr = bswap_64(jr->move.old_code_addr);
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jr->move.new_code_addr = bswap_64(jr->move.new_code_addr);
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jr->move.code_size = bswap_64(jr->move.code_size);
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jr->move.code_index = bswap_64(jr->move.code_index);
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}
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break;
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case JIT_CODE_MAX:
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default:
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return NULL;
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}
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return jr;
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}
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static int
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jit_inject_event(struct jit_buf_desc *jd, union perf_event *event)
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{
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ssize_t size;
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size = perf_data_file__write(jd->output, event, event->header.size);
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if (size < 0)
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return -1;
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jd->bytes_written += size;
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return 0;
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}
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static uint64_t convert_timestamp(struct jit_buf_desc *jd, uint64_t timestamp)
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{
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struct perf_tsc_conversion tc;
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if (!jd->use_arch_timestamp)
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return timestamp;
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tc.time_shift = jd->session->time_conv.time_shift;
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tc.time_mult = jd->session->time_conv.time_mult;
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tc.time_zero = jd->session->time_conv.time_zero;
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if (!tc.time_mult)
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return 0;
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return tsc_to_perf_time(timestamp, &tc);
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}
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static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr)
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{
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struct perf_sample sample;
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union perf_event *event;
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struct perf_tool *tool = jd->session->tool;
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uint64_t code, addr;
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uintptr_t uaddr;
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char *filename;
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struct stat st;
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size_t size;
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u16 idr_size;
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const char *sym;
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uint64_t count;
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int ret, csize;
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pid_t pid, tid;
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struct {
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u32 pid, tid;
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u64 time;
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} *id;
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pid = jr->load.pid;
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tid = jr->load.tid;
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csize = jr->load.code_size;
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addr = jr->load.code_addr;
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sym = (void *)((unsigned long)jr + sizeof(jr->load));
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|
|
code = (unsigned long)jr + jr->load.p.total_size - csize;
|
||
|
|
count = jr->load.code_index;
|
||
|
|
idr_size = jd->machine->id_hdr_size;
|
||
|
|
|
||
|
|
event = calloc(1, sizeof(*event) + idr_size);
|
||
|
|
if (!event)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
filename = event->mmap2.filename;
|
||
|
|
size = snprintf(filename, PATH_MAX, "%s/jitted-%d-%" PRIu64 ".so",
|
||
|
|
jd->dir,
|
||
|
|
pid,
|
||
|
|
count);
|
||
|
|
|
||
|
|
size++; /* for \0 */
|
||
|
|
|
||
|
|
size = PERF_ALIGN(size, sizeof(u64));
|
||
|
|
uaddr = (uintptr_t)code;
|
||
|
|
ret = jit_emit_elf(filename, sym, addr, (const void *)uaddr, csize, jd->debug_data, jd->nr_debug_entries);
|
||
|
|
|
||
|
|
if (jd->debug_data && jd->nr_debug_entries) {
|
||
|
|
free(jd->debug_data);
|
||
|
|
jd->debug_data = NULL;
|
||
|
|
jd->nr_debug_entries = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ret) {
|
||
|
|
free(event);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
if (stat(filename, &st))
|
||
|
|
memset(&st, 0, sizeof(st));
|
||
|
|
|
||
|
|
event->mmap2.header.type = PERF_RECORD_MMAP2;
|
||
|
|
event->mmap2.header.misc = PERF_RECORD_MISC_USER;
|
||
|
|
event->mmap2.header.size = (sizeof(event->mmap2) -
|
||
|
|
(sizeof(event->mmap2.filename) - size) + idr_size);
|
||
|
|
|
||
|
|
event->mmap2.pgoff = GEN_ELF_TEXT_OFFSET;
|
||
|
|
event->mmap2.start = addr;
|
||
|
|
event->mmap2.len = csize;
|
||
|
|
event->mmap2.pid = pid;
|
||
|
|
event->mmap2.tid = tid;
|
||
|
|
event->mmap2.ino = st.st_ino;
|
||
|
|
event->mmap2.maj = major(st.st_dev);
|
||
|
|
event->mmap2.min = minor(st.st_dev);
|
||
|
|
event->mmap2.prot = st.st_mode;
|
||
|
|
event->mmap2.flags = MAP_SHARED;
|
||
|
|
event->mmap2.ino_generation = 1;
|
||
|
|
|
||
|
|
id = (void *)((unsigned long)event + event->mmap.header.size - idr_size);
|
||
|
|
if (jd->sample_type & PERF_SAMPLE_TID) {
|
||
|
|
id->pid = pid;
|
||
|
|
id->tid = tid;
|
||
|
|
}
|
||
|
|
if (jd->sample_type & PERF_SAMPLE_TIME)
|
||
|
|
id->time = convert_timestamp(jd, jr->load.p.timestamp);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* create pseudo sample to induce dso hit increment
|
||
|
|
* use first address as sample address
|
||
|
|
*/
|
||
|
|
memset(&sample, 0, sizeof(sample));
|
||
|
|
sample.cpumode = PERF_RECORD_MISC_USER;
|
||
|
|
sample.pid = pid;
|
||
|
|
sample.tid = tid;
|
||
|
|
sample.time = id->time;
|
||
|
|
sample.ip = addr;
|
||
|
|
|
||
|
|
ret = perf_event__process_mmap2(tool, event, &sample, jd->machine);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = jit_inject_event(jd, event);
|
||
|
|
/*
|
||
|
|
* mark dso as use to generate buildid in the header
|
||
|
|
*/
|
||
|
|
if (!ret)
|
||
|
|
build_id__mark_dso_hit(tool, event, &sample, NULL, jd->machine);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr)
|
||
|
|
{
|
||
|
|
struct perf_sample sample;
|
||
|
|
union perf_event *event;
|
||
|
|
struct perf_tool *tool = jd->session->tool;
|
||
|
|
char *filename;
|
||
|
|
size_t size;
|
||
|
|
struct stat st;
|
||
|
|
u16 idr_size;
|
||
|
|
int ret;
|
||
|
|
pid_t pid, tid;
|
||
|
|
struct {
|
||
|
|
u32 pid, tid;
|
||
|
|
u64 time;
|
||
|
|
} *id;
|
||
|
|
|
||
|
|
pid = jr->move.pid;
|
||
|
|
tid = jr->move.tid;
|
||
|
|
idr_size = jd->machine->id_hdr_size;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* +16 to account for sample_id_all (hack)
|
||
|
|
*/
|
||
|
|
event = calloc(1, sizeof(*event) + 16);
|
||
|
|
if (!event)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
filename = event->mmap2.filename;
|
||
|
|
size = snprintf(filename, PATH_MAX, "%s/jitted-%d-%" PRIu64 ".so",
|
||
|
|
jd->dir,
|
||
|
|
pid,
|
||
|
|
jr->move.code_index);
|
||
|
|
|
||
|
|
size++; /* for \0 */
|
||
|
|
|
||
|
|
if (stat(filename, &st))
|
||
|
|
memset(&st, 0, sizeof(st));
|
||
|
|
|
||
|
|
size = PERF_ALIGN(size, sizeof(u64));
|
||
|
|
|
||
|
|
event->mmap2.header.type = PERF_RECORD_MMAP2;
|
||
|
|
event->mmap2.header.misc = PERF_RECORD_MISC_USER;
|
||
|
|
event->mmap2.header.size = (sizeof(event->mmap2) -
|
||
|
|
(sizeof(event->mmap2.filename) - size) + idr_size);
|
||
|
|
event->mmap2.pgoff = GEN_ELF_TEXT_OFFSET;
|
||
|
|
event->mmap2.start = jr->move.new_code_addr;
|
||
|
|
event->mmap2.len = jr->move.code_size;
|
||
|
|
event->mmap2.pid = pid;
|
||
|
|
event->mmap2.tid = tid;
|
||
|
|
event->mmap2.ino = st.st_ino;
|
||
|
|
event->mmap2.maj = major(st.st_dev);
|
||
|
|
event->mmap2.min = minor(st.st_dev);
|
||
|
|
event->mmap2.prot = st.st_mode;
|
||
|
|
event->mmap2.flags = MAP_SHARED;
|
||
|
|
event->mmap2.ino_generation = 1;
|
||
|
|
|
||
|
|
id = (void *)((unsigned long)event + event->mmap.header.size - idr_size);
|
||
|
|
if (jd->sample_type & PERF_SAMPLE_TID) {
|
||
|
|
id->pid = pid;
|
||
|
|
id->tid = tid;
|
||
|
|
}
|
||
|
|
if (jd->sample_type & PERF_SAMPLE_TIME)
|
||
|
|
id->time = convert_timestamp(jd, jr->load.p.timestamp);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* create pseudo sample to induce dso hit increment
|
||
|
|
* use first address as sample address
|
||
|
|
*/
|
||
|
|
memset(&sample, 0, sizeof(sample));
|
||
|
|
sample.cpumode = PERF_RECORD_MISC_USER;
|
||
|
|
sample.pid = pid;
|
||
|
|
sample.tid = tid;
|
||
|
|
sample.time = id->time;
|
||
|
|
sample.ip = jr->move.new_code_addr;
|
||
|
|
|
||
|
|
ret = perf_event__process_mmap2(tool, event, &sample, jd->machine);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = jit_inject_event(jd, event);
|
||
|
|
if (!ret)
|
||
|
|
build_id__mark_dso_hit(tool, event, &sample, NULL, jd->machine);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int jit_repipe_debug_info(struct jit_buf_desc *jd, union jr_entry *jr)
|
||
|
|
{
|
||
|
|
void *data;
|
||
|
|
size_t sz;
|
||
|
|
|
||
|
|
if (!(jd && jr))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
sz = jr->prefix.total_size - sizeof(jr->info);
|
||
|
|
data = malloc(sz);
|
||
|
|
if (!data)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
memcpy(data, &jr->info.entries, sz);
|
||
|
|
|
||
|
|
jd->debug_data = data;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* we must use nr_entry instead of size here because
|
||
|
|
* we cannot distinguish actual entry from padding otherwise
|
||
|
|
*/
|
||
|
|
jd->nr_debug_entries = jr->info.nr_entry;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
jit_process_dump(struct jit_buf_desc *jd)
|
||
|
|
{
|
||
|
|
union jr_entry *jr;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
while ((jr = jit_get_next_entry(jd))) {
|
||
|
|
switch(jr->prefix.id) {
|
||
|
|
case JIT_CODE_LOAD:
|
||
|
|
ret = jit_repipe_code_load(jd, jr);
|
||
|
|
break;
|
||
|
|
case JIT_CODE_MOVE:
|
||
|
|
ret = jit_repipe_code_move(jd, jr);
|
||
|
|
break;
|
||
|
|
case JIT_CODE_DEBUG_INFO:
|
||
|
|
ret = jit_repipe_debug_info(jd, jr);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
ret = 0;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
jit_inject(struct jit_buf_desc *jd, char *path)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (verbose > 0)
|
||
|
|
fprintf(stderr, "injecting: %s\n", path);
|
||
|
|
|
||
|
|
ret = jit_open(jd, path);
|
||
|
|
if (ret)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
ret = jit_process_dump(jd);
|
||
|
|
|
||
|
|
jit_close(jd);
|
||
|
|
|
||
|
|
if (verbose > 0)
|
||
|
|
fprintf(stderr, "injected: %s (%d)\n", path, ret);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* File must be with pattern .../jit-XXXX.dump
|
||
|
|
* where XXXX is the PID of the process which did the mmap()
|
||
|
|
* as captured in the RECORD_MMAP record
|
||
|
|
*/
|
||
|
|
static int
|
||
|
|
jit_detect(char *mmap_name, pid_t pid)
|
||
|
|
{
|
||
|
|
char *p;
|
||
|
|
char *end = NULL;
|
||
|
|
pid_t pid2;
|
||
|
|
|
||
|
|
if (verbose > 2)
|
||
|
|
fprintf(stderr, "jit marker trying : %s\n", mmap_name);
|
||
|
|
/*
|
||
|
|
* get file name
|
||
|
|
*/
|
||
|
|
p = strrchr(mmap_name, '/');
|
||
|
|
if (!p)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* match prefix
|
||
|
|
*/
|
||
|
|
if (strncmp(p, "/jit-", 5))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* skip prefix
|
||
|
|
*/
|
||
|
|
p += 5;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* must be followed by a pid
|
||
|
|
*/
|
||
|
|
if (!isdigit(*p))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
pid2 = (int)strtol(p, &end, 10);
|
||
|
|
if (!end)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* pid does not match mmap pid
|
||
|
|
* pid==0 in system-wide mode (synthesized)
|
||
|
|
*/
|
||
|
|
if (pid && pid2 != pid)
|
||
|
|
return -1;
|
||
|
|
/*
|
||
|
|
* validate suffix
|
||
|
|
*/
|
||
|
|
if (strcmp(end, ".dump"))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
if (verbose > 0)
|
||
|
|
fprintf(stderr, "jit marker found: %s\n", mmap_name);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
jit_process(struct perf_session *session,
|
||
|
|
struct perf_data_file *output,
|
||
|
|
struct machine *machine,
|
||
|
|
char *filename,
|
||
|
|
pid_t pid,
|
||
|
|
u64 *nbytes)
|
||
|
|
{
|
||
|
|
struct perf_evsel *first;
|
||
|
|
struct jit_buf_desc jd;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* first, detect marker mmap (i.e., the jitdump mmap)
|
||
|
|
*/
|
||
|
|
if (jit_detect(filename, pid))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
memset(&jd, 0, sizeof(jd));
|
||
|
|
|
||
|
|
jd.session = session;
|
||
|
|
jd.output = output;
|
||
|
|
jd.machine = machine;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* track sample_type to compute id_all layout
|
||
|
|
* perf sets the same sample type to all events as of now
|
||
|
|
*/
|
||
|
|
first = perf_evlist__first(session->evlist);
|
||
|
|
jd.sample_type = first->attr.sample_type;
|
||
|
|
|
||
|
|
*nbytes = 0;
|
||
|
|
|
||
|
|
ret = jit_inject(&jd, filename);
|
||
|
|
if (!ret) {
|
||
|
|
*nbytes = jd.bytes_written;
|
||
|
|
ret = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|