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/* tls_pbuf.h
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#pragma once
class tmp_pathbuf
{
uint32_t c_buf_old;
uint32_t w_buf_old;
public:
tmp_pathbuf () __attribute__ ((always_inline))
: c_buf_old (_my_tls.locals.pathbufs.c_cnt),
w_buf_old (_my_tls.locals.pathbufs.w_cnt)
{}
~tmp_pathbuf () __attribute__ ((always_inline))
{
_my_tls.locals.pathbufs.c_cnt = c_buf_old;
_my_tls.locals.pathbufs.w_cnt = w_buf_old;
}
inline bool check_usage (uint32_t c_need, uint32_t w_need)
{
return c_need + c_buf_old < TP_NUM_C_BUFS
&& w_need + w_buf_old < TP_NUM_W_BUFS;
}
char *c_get (); /* Create temporary TLS path buf of size NT_MAX_PATH. */
PWCHAR w_get (); /* Create temporary TLS path buf of size 2 * NT_MAX_PATH. */
inline char *t_get () { return (char *) w_get (); }
inline PUNICODE_STRING u_get (PUNICODE_STRING up)
{
up->Length = 0;
up->MaximumLength = (NT_MAX_PATH - 1) * sizeof (WCHAR);
up->Buffer = w_get ();
return up;
}
};
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