Lliujinyemove readv/writev to the kernel
| 文件 | 最后提交记录 | 最后更新时间 |
|---|---|---|
move readv/writev to the kernel currently, nuttx implements readv/writev on the top of read/write. while it might work for the simplest cases, it's broken by design. for example, it's impossible to make it work correctly for files which need to preserve data boundaries without allocating a single contiguous buffer. (udp socket, some character devices, etc) this change is a start of the migration to a better design. that is, implement read/write on the top of readv/writev. to avoid a single huge change, following things will NOT be done in this commit: * fix actual bugs caused by the original readv-based-on-read design. (cf. https://github.com/apache/nuttx/pull/12674) * adapt filesystems/drivers to actually benefit from the new interface. (except a few trivial examples) * eventually retire the old interface. * retire read/write syscalls. implement them in libc instead. * pread/pwrite/preadv/pwritev (except the introduction of struct uio, which is a preparation to back these variations with the new interface.) | 11 个月前 | |
move readv/writev to the kernel currently, nuttx implements readv/writev on the top of read/write. while it might work for the simplest cases, it's broken by design. for example, it's impossible to make it work correctly for files which need to preserve data boundaries without allocating a single contiguous buffer. (udp socket, some character devices, etc) this change is a start of the migration to a better design. that is, implement read/write on the top of readv/writev. to avoid a single huge change, following things will NOT be done in this commit: * fix actual bugs caused by the original readv-based-on-read design. (cf. https://github.com/apache/nuttx/pull/12674) * adapt filesystems/drivers to actually benefit from the new interface. (except a few trivial examples) * eventually retire the old interface. * retire read/write syscalls. implement them in libc instead. * pread/pwrite/preadv/pwritev (except the introduction of struct uio, which is a preparation to back these variations with the new interface.) | 11 个月前 | |
Merge branch 'master' into vela apache/nuttx commit id: eb27ebba8adfe29644a7b890f86e6f16941921dc Signed-off-by: ligd <liguiding1@xiaomi.com> Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> | 11 个月前 | |
Merge branch 'master' into vela apache/nuttx commit id: eb27ebba8adfe29644a7b890f86e6f16941921dc Signed-off-by: ligd <liguiding1@xiaomi.com> Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> | 11 个月前 |