148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
#include "builtin.h"
|
|
#include "config.h"
|
|
#include "entry.h"
|
|
#include "gettext.h"
|
|
#include "parallel-checkout.h"
|
|
#include "parse-options.h"
|
|
#include "pkt-line.h"
|
|
#include "read-cache-ll.h"
|
|
|
|
static void packet_to_pc_item(const char *buffer, int len,
|
|
struct parallel_checkout_item *pc_item)
|
|
{
|
|
const struct pc_item_fixed_portion *fixed_portion;
|
|
const char *variant;
|
|
char *encoding;
|
|
|
|
if (len < sizeof(struct pc_item_fixed_portion))
|
|
BUG("checkout worker received too short item (got %dB, exp %dB)",
|
|
len, (int)sizeof(struct pc_item_fixed_portion));
|
|
|
|
fixed_portion = (struct pc_item_fixed_portion *)buffer;
|
|
|
|
if (len - sizeof(struct pc_item_fixed_portion) !=
|
|
fixed_portion->name_len + fixed_portion->working_tree_encoding_len)
|
|
BUG("checkout worker received corrupted item");
|
|
|
|
variant = buffer + sizeof(struct pc_item_fixed_portion);
|
|
|
|
/*
|
|
* Note: the main process uses zero length to communicate that the
|
|
* encoding is NULL. There is no use case that requires sending an
|
|
* actual empty string, since convert_attrs() never sets
|
|
* ca.working_tree_enconding to "".
|
|
*/
|
|
if (fixed_portion->working_tree_encoding_len) {
|
|
encoding = xmemdupz(variant,
|
|
fixed_portion->working_tree_encoding_len);
|
|
variant += fixed_portion->working_tree_encoding_len;
|
|
} else {
|
|
encoding = NULL;
|
|
}
|
|
|
|
memset(pc_item, 0, sizeof(*pc_item));
|
|
pc_item->ce = make_empty_transient_cache_entry(fixed_portion->name_len, NULL);
|
|
pc_item->ce->ce_namelen = fixed_portion->name_len;
|
|
pc_item->ce->ce_mode = fixed_portion->ce_mode;
|
|
memcpy(pc_item->ce->name, variant, pc_item->ce->ce_namelen);
|
|
oidcpy(&pc_item->ce->oid, &fixed_portion->oid);
|
|
|
|
pc_item->id = fixed_portion->id;
|
|
pc_item->ca.crlf_action = fixed_portion->crlf_action;
|
|
pc_item->ca.ident = fixed_portion->ident;
|
|
pc_item->ca.working_tree_encoding = encoding;
|
|
}
|
|
|
|
static void report_result(struct parallel_checkout_item *pc_item)
|
|
{
|
|
struct pc_item_result res = { 0 };
|
|
size_t size;
|
|
|
|
res.id = pc_item->id;
|
|
res.status = pc_item->status;
|
|
|
|
if (pc_item->status == PC_ITEM_WRITTEN) {
|
|
res.st = pc_item->st;
|
|
size = sizeof(res);
|
|
} else {
|
|
size = PC_ITEM_RESULT_BASE_SIZE;
|
|
}
|
|
|
|
packet_write(1, (const char *)&res, size);
|
|
}
|
|
|
|
/* Free the worker-side malloced data, but not pc_item itself. */
|
|
static void release_pc_item_data(struct parallel_checkout_item *pc_item)
|
|
{
|
|
free((char *)pc_item->ca.working_tree_encoding);
|
|
discard_cache_entry(pc_item->ce);
|
|
}
|
|
|
|
static void worker_loop(struct checkout *state)
|
|
{
|
|
struct parallel_checkout_item *items = NULL;
|
|
size_t i, nr = 0, alloc = 0;
|
|
|
|
while (1) {
|
|
int len = packet_read(0, packet_buffer, sizeof(packet_buffer),
|
|
0);
|
|
|
|
if (len < 0)
|
|
BUG("packet_read() returned negative value");
|
|
else if (!len)
|
|
break;
|
|
|
|
ALLOC_GROW(items, nr + 1, alloc);
|
|
packet_to_pc_item(packet_buffer, len, &items[nr++]);
|
|
}
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
struct parallel_checkout_item *pc_item = &items[i];
|
|
write_pc_item(pc_item, state);
|
|
report_result(pc_item);
|
|
release_pc_item_data(pc_item);
|
|
}
|
|
|
|
packet_flush(1);
|
|
|
|
free(items);
|
|
}
|
|
|
|
static const char * const checkout_worker_usage[] = {
|
|
N_("git checkout--worker [<options>]"),
|
|
NULL
|
|
};
|
|
|
|
int cmd_checkout__worker(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct checkout state = CHECKOUT_INIT;
|
|
struct option checkout_worker_options[] = {
|
|
OPT_STRING(0, "prefix", &state.base_dir, N_("string"),
|
|
N_("when creating files, prepend <string>")),
|
|
OPT_END()
|
|
};
|
|
|
|
if (argc == 2 && !strcmp(argv[1], "-h"))
|
|
usage_with_options(checkout_worker_usage,
|
|
checkout_worker_options);
|
|
|
|
git_config(git_default_config, NULL);
|
|
argc = parse_options(argc, argv, prefix, checkout_worker_options,
|
|
checkout_worker_usage, 0);
|
|
if (argc > 0)
|
|
usage_with_options(checkout_worker_usage, checkout_worker_options);
|
|
|
|
if (state.base_dir)
|
|
state.base_dir_len = strlen(state.base_dir);
|
|
|
|
/*
|
|
* Setting this on a worker won't actually update the index. We just
|
|
* need to tell the checkout machinery to lstat() the written entries,
|
|
* so that we can send this data back to the main process.
|
|
*/
|
|
state.refresh_cache = 1;
|
|
|
|
worker_loop(&state);
|
|
return 0;
|
|
}
|