bytemark/flexnbd-c
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Big bit of debug output in write_not_zeroes (disabled).

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This commit is contained in:
Matthew Bloch
2012-06-07 12:28:21 +01:00
parent d763ab4e74
commit 40f0f9fab6
1 changed files with 17 additions and 0 deletions
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17
src/client.c
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@@ -46,6 +46,22 @@ void write_not_zeroes(struct client* client, off64_t from, int len)
debug("(run adjusted to %d)", run); debug("(run adjusted to %d)", run);
} }
if (0) /* useful but expensive */
{
int i;
fprintf(stderr, "full map resolution=%d: ", map->resolution);
for (i=0; i<client->serve->size; i+=map->resolution) {
int here = (from >= i && from < i+map->resolution);
if (here)
fprintf(stderr, ">");
fprintf(stderr, bitset_is_set_at(map, i) ? "1" : "0");
if (here)
fprintf(stderr, "<");
}
fprintf(stderr, "\n");
}
#define DO_READ(dst, len) CLIENT_ERROR_ON_FAILURE( \ #define DO_READ(dst, len) CLIENT_ERROR_ON_FAILURE( \
readloop( \ readloop( \
client->socket, \ client->socket, \
@@ -81,6 +97,7 @@ void write_not_zeroes(struct client* client, off64_t from, int len)
*/ */
if (zerobuffer[0] != 0 || if (zerobuffer[0] != 0 ||
memcmp(zerobuffer, zerobuffer + 1, blockrun - 1)) { memcmp(zerobuffer, zerobuffer + 1, blockrun - 1)) {
debug("non-zero, writing from=%ld, blockrun=%d", from, blockrun);
memcpy(client->mapped+from, zerobuffer, blockrun); memcpy(client->mapped+from, zerobuffer, blockrun);
bitset_set_range(map, from, blockrun); bitset_set_range(map, from, blockrun);
server_dirty(client->serve, from, blockrun); server_dirty(client->serve, from, blockrun);