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Update llama-mmap to work with 32-bit emscripten #22497

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Merged
reeselevine merged 3 commits into from
Apr 30, 2026
+10 −2
Merged

Update llama-mmap to work with 32-bit emscripten #22497

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5ac20bf
Update llama-mmap to work with 32-bit wasm and >2GB models
reeselevine Apr 29, 2026
06e796b
Update to gguf.cpp style
reeselevine Apr 29, 2026
f22c802
Merge remote-tracking branch 'origin/master' into file-loader-changes
reeselevine Apr 29, 2026
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12 changes: 10 additions & 2 deletions src/llama-mmap.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,14 @@
#include <TargetConditionals.h>
#endif

#ifdef _WIN32
# define llama_mmap_ftell _ftelli64
# define llama_mmap_fseek _fseeki64
#else
# define llama_mmap_ftell ftello
# define llama_mmap_fseek fseeko
#endif

// TODO: consider moving to llama-impl.h if needed in more places
#if defined(_WIN32)
static std::string llama_format_win_err(DWORD err) {
Expand Down Expand Up @@ -226,7 +234,7 @@ struct llama_file::impl {

size_t tell() const {
if (fd == -1) {
long ret = std::ftell(fp);
off_t ret = llama_mmap_ftell(fp);
if (ret == -1) {
throw std::runtime_error(format("ftell error: %s", strerror(errno)));
}
Expand All @@ -244,7 +252,7 @@ struct llama_file::impl {
void seek(size_t offset, int whence) const {
off_t ret = 0;
if (fd == -1) {
ret = std::fseek(fp, (long) offset, whence);
ret = llama_mmap_fseek(fp, offset, whence);
} else {
ret = lseek(fd, offset, whence);
}
Expand Down