f72a40
internals: added amgc_dprintf(), a signal-resilient dprintf implementation.
Authored and Committed by 
midipix
6 years ago
project/common.mk
CHANGED
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@@ -17,6 +17,7 @@ API_SRCS = \
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src/skin/amgc_skin_default.c \
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INTERNAL_SRCS = \
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+
src/internal/$(PACKAGE)_dprintf_impl.c \
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src/internal/$(PACKAGE)_errinfo_impl.c \
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APP_SRCS = \
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project/headers.mk
CHANGED
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@@ -4,6 +4,7 @@ API_HEADERS = \
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INTERNAL_HEADERS = \
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$(PROJECT_DIR)/src/internal/argv/argv.h \
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+
$(PROJECT_DIR)/src/internal/$(PACKAGE)_dprintf_impl.h \
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$(PROJECT_DIR)/src/internal/$(PACKAGE)_driver_impl.h \
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$(PROJECT_DIR)/src/internal/$(PACKAGE)_errinfo_impl.h \
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src/internal/apimagic_dprintf_impl.c
ADDED
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@@ -0,0 +1,56 @@
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int amgc_dprintf(int fd, const char * fmt, ...)
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{
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int ret;
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int cnt;
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int size;
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va_list ap;
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char * ch;
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char * buf;
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char chbuf[2048];
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va_start(ap,fmt);
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size = sizeof(chbuf);
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buf = ((cnt = vsnprintf(chbuf,size,fmt,ap)) < size)
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? chbuf : malloc(cnt + 1);
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va_end(ap);
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if (buf == chbuf) {
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(void)0;
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} else if (buf) {
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va_start(ap,fmt);
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vsprintf(buf,fmt,ap);
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va_end(ap);
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} else {
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return -1;
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}
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ret = 0;
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ch = buf;
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for (; cnt && ret>=0; ) {
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ret = write(fd,ch,cnt);
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while ((ret < 0) && (errno == EINTR))
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ret = write(fd,ch,cnt);
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ch += ret;
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cnt -= ret;
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}
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ret = (ret < 0) ? -1 : ch - buf;
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if (buf != chbuf)
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free(buf);
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return ret;
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}
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src/internal/apimagic_dprintf_impl.h
ADDED
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@@ -0,0 +1,6 @@
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int amgc_dprintf(int fd, const char * fmt, ...);
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