[dpdk-dev] [PATCH v7 5/8] eal: add headers for compatibility with windows

[Anand Rawat <anand.rawat@intel.com>]

Added headers to support windows environment for common source.
These headers will have windows specific implementions of the
system library apis provided in linux and freebsd.

Signed-off-by: Anand Rawat <anand.rawat@intel.com>
Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com>
Reviewed-by: Jeff Shaw <jeffrey.b.shaw@intel.com>
Reviewed-by: Ranjit Menon <ranjit.menon@intel.com>
---
 .../windows/eal/include/exec-env/fnmatch.h    | 48 ++++++++++
 .../windows/eal/include/exec-env/pthread.h    | 27 ++++++
 .../windows/eal/include/exec-env/regex.h      | 88 +++++++++++++++++++
 .../windows/eal/include/exec-env/sched.h      | 46 ++++++++++
 .../windows/eal/include/exec-env/unistd.h     | 12 +++
 5 files changed, 221 insertions(+)
 create mode 100644 lib/librte_eal/windows/eal/include/exec-env/fnmatch.h
 create mode 100644 lib/librte_eal/windows/eal/include/exec-env/pthread.h
 create mode 100644 lib/librte_eal/windows/eal/include/exec-env/regex.h
 create mode 100644 lib/librte_eal/windows/eal/include/exec-env/sched.h
 create mode 100644 lib/librte_eal/windows/eal/include/exec-env/unistd.h

diff --git a/lib/librte_eal/windows/eal/include/exec-env/fnmatch.h b/lib/librte_eal/windows/eal/include/exec-env/fnmatch.h
new file mode 100644
index 000000000..0a70c4c26
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/exec-env/fnmatch.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#ifndef _FNMATCH_H_
+#define _FNMATCH_H_
+
+/**
+ * This file is required to support the common code in eal_common_log.c
+ * as windows C lib does not contain fnmatch.h. This may be removed in
+ * future releases.
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FNM_NOMATCH 1
+
+/**
+ * This function is used for searhing a given string source
+ * with the given regular expression pattern.
+ *
+ * @param pattern
+ *	regular expression notation decribing the pattern to match
+ *
+ * @param string
+ *	source string to searcg for the pattern
+ *
+ * @param flag
+ *	containing information about the pattern
+ *
+ * @return
+ *	if the pattern is found then return 0 or else FNM_NOMATCH
+ */
+static inline int fnmatch(__rte_unused const char *pattern,
+		__rte_unused const char *string,
+		__rte_unused int flags)
+{
+	/* TODO */
+	/* This is a stub, not the expected result */
+	return FNM_NOMATCH;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FNMATCH_H_ */
diff --git a/lib/librte_eal/windows/eal/include/exec-env/pthread.h b/lib/librte_eal/windows/eal/include/exec-env/pthread.h
new file mode 100644
index 000000000..63054ffb2
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/exec-env/pthread.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#ifndef _PTHREAD_H_
+#define _PTHREAD_H_
+
+/**
+ * This file is required to support the common code in eal_common_proc.c,
+ * eal_common_thread.c and common\include\rte_per_lcore.h as windows C lib
+ * does not contain pthread.h. This may be removed in future releases.
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* defining pthread_t type on windows */
+typedef uintptr_t pthread_t;
+
+/* defining pthread_attr_t type on windows */
+typedef void *pthread_attr_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PTHREAD_H_ */
diff --git a/lib/librte_eal/windows/eal/include/exec-env/regex.h b/lib/librte_eal/windows/eal/include/exec-env/regex.h
new file mode 100644
index 000000000..df05af56f
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/exec-env/regex.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#ifndef _REGEX_H_
+#define _REGEX_H_
+
+/**
+ * This file is required to support the common code in eal_common_log.c
+ * as windows C lib does not contain regex.h. This may be removed in
+ * future releases.
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define REG_NOMATCH 1
+#define REG_ESPACE 12
+
+/* defining regex_t for windows */
+typedef void *regex_t;
+/* defining regmatch_t for windows */
+typedef void *regmatch_t;
+
+/**
+ * The regcomp() function will compile the regular expression
+ * contained in the string pointed to by the pattern argument
+ * and place the results in the structure pointed to by preg.
+ * The cflags argument is the bitwise inclusive OR of zero or
+ * more of the flags
+ */
+static inline int regcomp(__rte_unused regex_t *preg,
+		__rte_unused const char *regex, __rte_unused int cflags)
+{
+	/* TODO */
+	/* This is a stub, not the expected result */
+	return REG_ESPACE;
+}
+
+/**
+ * The regexec() function compares the null-terminated string
+ * specified by string with the compiled regular expression
+ * preg initialised by a previous call to regcomp(). If it finds
+ * a match, regexec() returns 0; otherwise it returns non-zero
+ * indicating either no match or an error. The eflags argument
+ * is the bitwise inclusive OR of zero or more of the flags.
+ */
+static inline int regexec(__rte_unused const regex_t *preg,
+		__rte_unused const char *string, __rte_unused size_t nmatch,
+		__rte_unused regmatch_t pmatch[], __rte_unused int eflags)
+{
+	/* TODO */
+	/* This is a stub, not the expected result */
+	return REG_NOMATCH;
+}
+
+/**
+ * The regerror() function provides a mapping from error codes
+ * returned by regcomp() and regexec() to unspecified printable strings.
+ */
+static inline size_t regerror(__rte_unused int errcode,
+		__rte_unused const regex_t *preg, char *errbuf,
+		__rte_unused size_t errbuf_size)
+{
+	/* TODO */
+	/* This is a stub, not the expected result */
+	if (errbuf) {
+		*errbuf = '\0';
+		return 1;
+	}
+	return 0;
+}
+
+/**
+ * The regfree() function frees any memory allocated by regcomp()
+ * associated with preg.
+ */
+static inline void regfree(__rte_unused regex_t *preg)
+{
+	/* TODO */
+	/* This is a stub, not the expected result */
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _REGEX_H_ */
diff --git a/lib/librte_eal/windows/eal/include/exec-env/sched.h b/lib/librte_eal/windows/eal/include/exec-env/sched.h
new file mode 100644
index 000000000..1851857cf
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/exec-env/sched.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#ifndef _SCHED_H_
+#define _SCHED_H_
+
+/**
+ * This file is added to support the common code in eal_common_thread.c
+ * as windows C lib does not contain sched.h. This may be removed
+ * in future releases.
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef CPU_SET_SIZE
+#define CPU_SET_SIZE RTE_MAX_LCORE
+#endif
+
+#define _BITS_PER_SET (sizeof(long long) * 8)
+#define _BIT_SET_MASK (_BITS_PER_SET - 1)
+
+#define _NUM_SETS(b) (((b) + _BIT_SET_MASK) / _BITS_PER_SET)
+#define _WHICH_SET(b) ((b) / _BITS_PER_SET)
+#define _WHICH_BIT(b) ((b) & (_BITS_PER_SET - 1))
+
+typedef struct _rte_cpuset_s {
+	long long _bits[_NUM_SETS(CPU_SET_SIZE)];
+} rte_cpuset_t;
+
+#define CPU_SET(b, s) ((s)->_bits[_WHICH_SET(b)] |= (1LL << _WHICH_BIT(b)))
+
+#define CPU_ZERO(s)							\
+	do {								\
+		unsigned int _i;					\
+									\
+		for (_i = 0; _i < _NUM_SETS(CPU_SET_SIZE); _i++)	\
+			(s)->_bits[_i] = 0LL;				\
+	} while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SCHED_H_ */
diff --git a/lib/librte_eal/windows/eal/include/exec-env/unistd.h b/lib/librte_eal/windows/eal/include/exec-env/unistd.h
new file mode 100644
index 000000000..546e70b56
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/exec-env/unistd.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#ifndef _UNISTD_H_
+#define _UNISTD_H_
+/**
+ * This file is added to support common code in eal_common_lcore.c
+ * as windows C lib does not contain unistd.h. This may be removed
+ * in future releases.
+ */
+#endif /* _UNISTD_H_ */
-- 
2.17.1.windows.2