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/*****************************************************************************/
/* dalist: a zero-dependency book-keeping library */
/* Copyright (C) 2013--2021 SysDeer Technologies, LLC */
/* Released under GPLv2 and GPLv3; see COPYING.DALIST. */
/*****************************************************************************/
#include <dalist/dalist.h>
#include "dalist_impl.h"
dalist_api
int dalist_debug_setup(
struct dalist_ex * dlist,
struct dalist_debug * dlist_debug,
enum dalist_dbgenv dbgenv,
dalist_sprintf * pfn_sprintf,
dalist_write * pfn_write,
dalist_write_file * pfn_write_file)
{
if (dlist)
/* in case we fail */
dlist->debug = 0;
else
return DALIST_ELIST;
if (!dlist_debug)
return DALIST_EDEBUGSTRUCT;
else if (!pfn_sprintf)
return DALIST_EDEBUGSPRINTF;
switch (dbgenv) {
case DALIST_DEBUG_ENV_POSIX:
if (!pfn_write)
return DALIST_EDEBUGWRITE;
break;
case DALIST_DEBUG_ENV_NT:
if (!pfn_write_file)
return DALIST_EDEBUGWRITEFILE;
break;
default:
return DALIST_EDEBUGENV;
}
dlist_debug->dbgenv = dbgenv;
dlist_debug->sprintf = pfn_sprintf;
dlist_debug->write = pfn_write;
dlist_debug->zw_write_file = pfn_write_file;
dlist->debug = dlist_debug;
return DALIST_OK;
}
static const char dalist_fmt_header_32[] =
"dlist:\t\t0x%08x\n"
"dlist->head:\t0x%08x\n"
"dlist->tail:\t0x%08x\n\n";
static const char dalist_fmt_header_64[] =
"dlist:\t\t0x%016x\n"
"dlist->head:\t0x%016x\n"
"dlist->tail:\t0x%016x\n\n";
static const char dalist_fmt_node_32[] =
"node: 0x%08x\t"
"prev: 0x%08x\t"
"next: 0x%08x\t"
"any: 0x%08x\t\n";
static const char dalist_fmt_node_64[] =
"node: 0x%016x\t"
"prev: 0x%016x\t"
"next: 0x%016x\t"
"any: 0x%016x\t\n";
static const char * dalist_fmt_headers[2] = {
dalist_fmt_header_32,
dalist_fmt_header_64
};
static const char * dalist_fmt_nodes[2] = {
dalist_fmt_node_32,
dalist_fmt_node_64
};
static int dalist_dbg_write_posix(
struct dalist_ex * dlist,
intptr_t fildes_or_hfile,
const void * buf,
size_t nbyte)
{
int fildes;
dalist_write * pfn_write;
ssize_t bytes_written;
fildes = (int)fildes_or_hfile;
pfn_write = (dalist_write *)dlist->debug->write;
bytes_written = pfn_write(fildes,buf,nbyte);
if (bytes_written < 0)
return DALIST_EDEBUGENV;
else if (bytes_written == (ssize_t)nbyte)
return DALIST_OK;
else
return DALIST_EDEBUGENV;
}
static int dalist_dbg_write_nt(
struct dalist_ex * dlist,
intptr_t fildes_or_hfile,
const void * buf,
size_t nbyte)
{
void * hfile;
struct dalist_iosb iosb;
dalist_write_file * pfn_write_file;
hfile = (void *)fildes_or_hfile;
pfn_write_file = (dalist_write_file *)dlist->debug->zw_write_file;
return pfn_write_file(
hfile,
(void *)0,
(void *)0,
(void *)0,
&iosb,
(void *)buf,
(uint32_t)nbyte,
(int64_t *)0,
(uint32_t *)0);
}
dalist_api
int dalist_debug_print(
struct dalist_ex * dlist,
intptr_t fildes_or_hfile)
{
const char * fmt_header;
const char * fmt_node;
char dbg_buf[128];
intptr_t nbyte;
int status;
struct dalist_node * node;
dalist_sprintf * dbg_sprintf;
dalist_dbg_write * dbg_write;
if (!dlist)
return DALIST_ELIST;
else if (!dlist->debug)
return DALIST_EDEBUGENV;
/* initial setup */
dbg_sprintf = (dalist_sprintf *)dlist->debug->sprintf;
fmt_header = dalist_fmt_headers[(sizeof(size_t)-4)/4];
fmt_node = dalist_fmt_nodes[(sizeof(size_t)-4)/4];
if (dlist->debug->dbgenv == DALIST_DEBUG_ENV_POSIX)
dbg_write = dalist_dbg_write_posix;
else if (dlist->debug->dbgenv == DALIST_DEBUG_ENV_NT)
dbg_write = dalist_dbg_write_nt;
else
dbg_write = 0;
if ((!dbg_sprintf) || (!dbg_write))
return DALIST_EDEBUGENV;
/* print list header */
nbyte = dbg_sprintf((char *)dbg_buf,fmt_header,dlist,dlist->head,dlist->tail);
if (nbyte < 0)
return DALIST_EDEBUGENV;
status = dbg_write(dlist,fildes_or_hfile,dbg_buf,nbyte);
if (status != NT_STATUS_SUCCESS)
return DALIST_EDEBUGENV;
/* print node information */
status = DALIST_OK;
node = (struct dalist_node *)dlist->head;
while (node && (status == DALIST_OK)) {
/* create output line */
nbyte = dbg_sprintf(
(char *)dbg_buf,
fmt_node,
node,
node->prev,
node->next,
node->any);
if (nbyte < 0)
return DALIST_EDEBUGENV;
/* write output line */
status = dbg_write(
dlist,
fildes_or_hfile,
dbg_buf,
nbyte);
node = node->next;
}
return DALIST_OK;
}
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